You don't even need that. Mars' atmosphere is very thin. Windspeeds can be extreme but there is so little mass being moved that the generated forces are pretty minimal.
The unpainted steel of the DeLorean made it a pain in the ass to repair. You can't pull dents, apply body filler and repaint, you basically need a whole new panel if you want to restore damage.
The part of the demo that was actually impressive was the part where they took sledgehammers to the body panels and didn't leave dents. I think it'll be fine.