Sports cars are known to be the most powerful and fastest cars on the market. They are so powerful because of their V8 engines. V8 engines pack a lot of power and speed for cars like the Dodge Challenger, Chevorlet Camaro and Ford Mustangs. However, the 2018 Dodge Challenger is said to the fastest car that will be out. It will have a 840 horse powered engine, wit a lot of more bells and whistles to come.