Fox News: Kevin Hart and passengers in car crash are lawyering up: reports.
I still think the primary cause was likely excessive speed, but Hart is a deep pocket. But it presents an interesting question. If you swap a modern, 700 hp engine into a 70s car, does reasonable care involve the installation of safety devices - maybe harnesses and a roll cage?
I keep thinking about when I first heard about them going off the road, and I thought, "of course they did," because a 700 hp Barracuda is bound to crash.