What do you exactly understand by a 'grinding' car crash?
I can understand that it's a very bad car crash.
I can understand that it's a very bad car crash.
In that case you could call it a "rollover crash" (in the U.S.).In this article the grinding was supplied by the car being turned turtle (on its roof).
See: http://www.waff.com/Global/story.asp?S=8263311&nav=0hBE
Note: The descriptions of the accident and the victims is most unpleasant.