Bizzarrini P538 drivers Edgar Berney and Andre Wicky, but records indicate both retired after three hours with a cooling problem. A second team in a production-based Bizzarrini A3/C, driven by Sam Posey and Massimo Natili, was disqualified after a pit lane violation, possibly while returning with serious frame damage. American Ferrari driver Mike Gammino then commissioned a Lamborghini 4.0-liter V12 powered car, which he raced once. Bizzarrini attempted to build a second, 3.5-litre V12 car for Le Mans, but was unable to complete it before bankruptcy. Beginning in the mid-1970s and continuing at least through the 1990s, former Bizzarrini engineer Salvatore Diomante
Who Killed the Electric Car? quo. The film corroborates the claim that hydrogen vehicles are a mere distraction by stating that "A fuel cell car powered by hydrogen made with electricity uses three to four times more energy than a car powered by batteries" and by interviewing Joseph J. Romm, the author of "The Hype about Hydrogen", who lists five problems he sees with hydrogen vehicles: High cost, limits on driving range due to current materials, high costs of hydrogen fuel, the need for entirely new fueling compounds, and competition from other technologies in the marketplace, such as hybrids. The price of Hydrogen has since