The Tomahawk is a Viper V-10 based motorcycle, a 500 horsepower engine with four wheels beneath it. The engine breathes through twin throttle bodiesmounted right up front. (That's what the two round things above the front tires are).
Chryslersold nine replicas through Neiman Marcus, for $555,000 each. The motorcycles cannot be driven on public roads. A spokesman told Reuters they were meant as rolling sculptures, presumably to avoid legal liability. They are apparently driveable - just not (legally) on public roads.
The 1,500-pound Tomahawk can reach 60 miles (97 km) an hour in about 2.5 seconds, and has a top speed of 420 mph (680 km/h). Each pair of wheels is separated by a few inches and each wheel has an independent suspension. Bernhard said four wheels were necessary to handle the power from the engine.


http://www.youtube.com/watch?v=i7MedT2TDRM