A Texas-Built Hypercar, the 300 MPH Hennessey Venom, Is in the Running for the World’s Fastest Production Car
3 min
There are Corvette fans for whom the base US$68,300 car is plenty powerful enough. After all, it produces 495 horsepower and can reach 60 miles per hour in 2.9 seconds. But hold on, there’s also the approximately US$115,000 Z06—with 670 horsepower and able to reach 60 in 2.6 seconds. These split seconds are important for busy people—and for marketing claims. And if that’s not enough go power, there’s the even more formidable 900-horsepower ZR1 version of the Corvette, starting around US$150,000. The hybrid E-Ray, at US$104,900, is pretty potent, too.
But if they’re still too slow, fans of American-engineered muscle can consider the exclusive Texas-built Hennessey Venom F5, a limited-edition carbon-fibre hypercar. Ten years ago, the Hennessey became the world’s fastest production car, defeating the Bugatti Veyron Super Sport, with a top speed of 270.49 miles per hour.
That world title is much sought after, and is currently held by the Sweden-built 1,600-horsepower Koenigsegg Jesko Absolut, with a two-way average top speed of 277.8 mph. But Hennessey is still very much a contender. The company is hoping the 1,817-horsepower F5 (with 1,192 pound-feet of torque) can exceed 300 mph on the track this year.
Hennessey photo
Hennessey’s previous Venom GT model (introduced in 2010) was based on the Lotus Exige, with a GM LS-based engine, and was built by partner Delta Motorsport. Spokesman Jon Visscher tells Penta , “The new Venom F5, revealed in 2020, is a 100%bespoke creation—unique to Hennessey and featuring a Hennessey-designed 6.6-litre twin-turbo V8 engine boasting 1,817 horsepower, making it the world’s most powerful combustion-engine production car.” Leaps in performance like this tend to be pricey.
This is a very exclusive automobile, priced around US$2.5 million for the coupe, and US$3 million for the F5 Roadster announced in 2023. Only 30 Roadsters will be built, with a removable carbon-fiber roof. The 24 F5 coupes were spoken for in 2021, but if you really want one you could find a used example—or go topless. In a statement to Penta , company founder and CEO John Hennessey said that while the coupe “is now sold out, a handful of build slots remain for our Roadster and [track-focused] Revolution models.”
Only 24 Revolutions will be built in coupe form, priced at US$2.7 million. There’s also a rarefied roadster version of the Revolution, with just 12 to be built.
Hennessey photo
The Venom F5 coupe weighs only 3,000 pounds, and it’s not surprising that insane speeds are possible when combined with a hand-built motor (nicknamed “Fury”) created with power uppermost. The V8 in the F5, installed in a rear mid-engine configuration, has a custom engine block and lightweight forged aluminium pistons, billet-steel crankshaft, and forged-steel connecting rods. Twin turbochargers are featured. The F5 can reach 62 mph in less than three seconds, but top speed seems to be its claim to fame.
The driver shifts the rear-wheel-drive car via a seven-speed, single-clutch transmission with paddle shifters. The interior is not as spartan or as tight as in many other supercars, and is able to handle very tall people. The butterfly doors lift up for access.
“With 22 customer Venom F5 hypercars already delivered to customers around the world, and a newly expanded engineering team, we’re focusing the Venom F5 on delivering on its potential,” Hennessey says. “Breaking 300 mph in two directions is the goal we aim to achieve toward the end of this year to claim the ‘world’s fastest production car’ title.”
Hennessey says the car and team are ready. “Now the search is on for a runway or public road with a sufficiently long straight to allow our 1,817-horsepower, twin-turbo V8 monster to accelerate beyond 300 mph and return to zero safely.” The very competitive Hennessey said the track-focused Revolution version of the F5 set a fastest production car lap around Texas’ 3.41-mile Circuit of the Americas track in March, going almost seven seconds faster than a McLaren P1.
The Revolution features a roof-mounted central air scoop (to deliver cool air to the engine bay), a full-width rear carbon wing, larger front splitter and rear diffuser, tweaked suspension, and engine cooling. It’s got the same powertrain as the standard cars, but is enhanced to stay planted at otherworldly speeds.
Copyright 2020, Dow Jones & Company, Inc. All Rights Reserved Worldwide. LEARN MORE
BNW Developments has established a Sydney presence, joining Arada and Sobha Realty among the growing number of UAE developers pursuing Australian buyers and development opportunities.
Australian shares fell on Thursday as Wall Street weakness, rising oil and persistent rate concerns weighed on most of the market. The S&P/ASX 200 declined 0.72 per cent to 8,702. The All Ordinaries lost 0.66 per cent to finish at 8,897. Mining stocks were hit particularly hard, while real estate also dragged on the index. …
Continue reading “ASX falls 0.7 per cent as miners and property stocks retreat”
OpenAI has shelved the planned launch of GPT-6.1 Astra after internal tests raised concerns about deception and agents acting beyond user authorization, according to The Wall Street Journal. The company says it will investigate the issues and strengthen safety measures before releasing future models.
4 min
OpenAI says it is scrapping the release of its next-generation AI model over safety concerns that researchers raised during internal testing, in one of the clearest signs so far that agent misbehavior could stymie the industry’s rapid progression.
The move follows a summer punctuated by reports of artificial-intelligence systems industrywide going rogue, and marks a rare case of a major AI developer ditching a new release because of safety concerns.
The company had planned to launch the model, known as GPT-6.1 Astra, in the coming days or weeks, aiming for an October debut. The model was more capable than the company’s previous models in completing challenging tasks from end-to-end without human assistance, as well as writing.
The company instead will focus on improving the safety of future models, which it expects to be even more capable.
Saachi Jain, OpenAI’s head of safety systems, said in an interview that GPT-6.1 Astra regressed in two areas. Compared with its predecessor, GPT-6 Astra, the model performed poorly on tests measuring alignment, or how well the model adheres to what humans would like it to do. Specifically, GPT-6.1 Astra showed higher levels of deception: It wasn’t always honest about telling users of the actions it did or didn’t take.
Another issue was what OpenAI calls “scope authorization,” meaning that GPT-6.1 Astra would push ahead on a task without asking the user for permission, and would at times reach for external tools and services even if it might be unsafe.
“For anything regarding safety and alignment, there’s a trade off,” Jain said. “You really do need to find what’s the right line between staying within scope, but also avoiding laziness in terms of how the model actually pursues tasks even when it hits friction.”
While GPT-6.1 Astra improved in areas such as “model laziness,” Jain said it didn’t quite meet OpenAI’s bar for safety and alignment, so the company decided not to launch the model publicly.
The announcement comes one day ahead of OpenAI’s annual developer conference in San Francisco. In the past, OpenAI has used the conference as an opportunity to launch new models and services that reduce costs for software developers—a segment the ChatGPT-maker competes with rival AI company Anthropic to win over.
In recent weeks, OpenAI and Anthropic have called on industry partners to slow down the development of cutting-edge AI models and invest in safety standards, noting they will temper the pace of their own internal AI progress.
OpenAI says it is working to investigate a range of agent security incidents that it has discovered in recent months, and address the safety issues underneath them. As part of the work, the company has implemented a new monitoring system to catch AI-agent misbehavior more quickly, and started requiring engineers to use stronger security guardrails for testing its AI systems.
Earlier this summer hundreds of OpenAI’s internal agents, which were tasked with completing a cybersecurity test, ended up hacking into the AI company Hugging Face. Since then, high-profile organizations such as the Australian government and United Nations discovered that OpenAI’s agents used similar, but less extensive, techniques to gain access to their websites.
Many of the publicly known agent-security incidents involved OpenAI’s internal AI models that were never slated for public release.
Last week, OpenAI said it paused training on its most capable AI models after an AI agent slipped through a gap in the company’s internet restrictions to query a public chatbot. The company said its new monitoring systems flagged the incident within 15 minutes, and training on these models remains paused.
GPT-6.1 Astra isn’t one of those models, but a different case, the company said.
“We want to make sure our model development is safe no matter whether that’s in the company, or when we ship it to users,” Jain said. “But when we ship it to users, we have an extremely high bar in terms of safety and alignment.”
While the company decided not to ship GPT-6.1 Astra, it hopes to use the same base model to do additional reinforcement learning runs, and create future generations of its GPT-6 models.
OpenAI plans to conduct several deep dives to identify the root cause of the problems identified in GPT-6.1 Astra, Jain said. The work includes ensuring that OpenAI’s reinforcement learning environments are rewarding the right type of behavior, Jain added, though she noted the company would investigate all stages of model development.
AI companies have begun to draw scrutiny from policymakers and public officials, who are paying attention to the rapid development of the technology. Later this week, a Senate subcommittee is holding a hearing with third party AI researchers titled, “Rogue AI: Securing the Homeland Against AI Agent Attacks.”
Florida Attorney General James Uthmeier, a Republican, sued OpenAI in June, claiming that the company and Chief Executive Sam Altman knowingly released an unsafe product and ignored warnings that it could harm users.
In a motion for temporary injunction filed Monday, Uthmeier sought to prevent OpenAI from developing new AI models without third-party approved safeguards, stop ChatGPT from soliciting user engagement and limit the company’s ability to advertise ChatGPT as safe.
Tech companies claim they “cannot stop barreling forward with their potentially civilization-ending endeavors unless they are forced to do so by the government,” Uthmeier said in the filing. “The Florida Attorney General is answering your cry for help.”
An OpenAI spokeswoman said that people want to know AI is being developed safely, “and that starts with what companies like ours do ourselves.”
“Governments have an important role to play in setting robust safety standards for AI, and we’re committed to working with Florida and other states on advancing pragmatic AI policies that apply to the entire AI industry—not just one company,” she said.
Sydney Children’s Hospitals Foundation CEO Kristina Keneally says Australia’s culture of large-scale philanthropy is becoming more sophisticated as Gold Dinner raises $75.5 million for children’s health, research and innovation.
The Australian leather house has opened an immersive four-day pop-up in Manhattan, unveiling its Bloom Collection and redefining what a product launch can look like.
