I don't buy that one. All Off Road Race Cars and most Dune Buggy's frames are made out of 100% Chromolly. They see more bumps etc than any street car could ever imagine without cracking or seeing any fatigue.
I was thinking the same thing. Been in a full chromolly preerunner buggy doing 80 through big whoops and 120 through small ones and flying 100 foot jumps. Think a street car is going to be just fine.