19. Polaris Slingshot
Developing the theme of three-wheel performance car, Polaris presented the Slingshot. It was a three-wheel half motorcycle-half performance roadster that debuted in 2014. The Slingshot can sit two people and has a 2.4 liter engine delivering 173 HP. However, since the car is light and low to the ground, it has crazy acceleration times and high top speeds.