The Dodge Tomahawk Motorcycle may be the only motorcycle listed here that technically isn’t actually a motorcycle. Based on a Viper V-10 bike, it’s got a beefy 500 horsepower engine and 4 wheels. According to the National Highway Traffic and Safety Administration anything with more than 3 wheels on the ground doesn’t qualify as a motorcycle. That probably has something to do with why this beast of a bike never made it into mass production. Shame because this awesome machine is basically just an engine and some wheels that provide raw speed and power between your legs. Source