You're just looking at the car from a weird angle in the video. The trailing camera bounces up and down and gives the impression that the car doesn't really "bounce", it makes it look artificial. Don't worry though, it is one of the greatest and probably most accurate rides you'll ever try in rF2.
Man, when u learn how to manage that left front which u are absolutelly annihilating, you will be VERY fast cobra driver, impressed much faster than me