I think a Hybrid is a car that has been changed or modified in such a way that it can only be acheived by using some sort of cheat function e.g. gameshark, codebreaker, Mk's program. For instance, The maximum amount of horse power of a sprinter trueno is something like c. 350. But I was able to use my gameshark to put an escudo pikes peak engine (950 hp) in the trueno. So now it has become a hybrid i quess.