Almost twenty years ago they had automotive design departments of top car companies make gravity racers for the Xtreme Gravity Racing series in 2005. Corporate-supported entries, Nissan, Mazda, Chrysler, Infiniti, Volvo, Bentley Volkswagen, GM, and Audi used their design, engineering and fabrication staff to create beautiful aero entries.
L'Ultime Descente Speed Challenge, Atomic Scalpel has the world's gravity top speed record @ 101.98 mph