I don't think cars can somersault. I would describe the action as flipping over several times.
Student or Learner
Please open the link below. What do you call this action in the animation?
What verb / phrase do you use to describe it? The most common one, please.
Even though you might hear news reports tell of a car "somersaulting half a dozen time before coming to rest in a ditch" (or similar), I agree with MikeNewYork that generally we reserve the use of the word for people who are performing this acrobatic move on purpose.
I couldn't get the video to work, but I would say that a car either rolls or flips.
Remember - if you don't use correct capitalisation, punctuation and spacing, anything you write will be incorrect.