Have you always wanted to own your own bumper car? These new models are powered by a Kawasaki 750cc motorcycle engine, available for $50,000, and are street legal. It's not the same thrill ride you enjoyed at the amusement park when you were a kid, as you can't bump others off the road, but it is still loads of fun and good on fuel. The Kawasaki engine allows you to reach street legal speeds and the cars are available in various models and styles.