Were you involved in that production?
Yep.
Had one guy underneath for the formation with the car - he was upside down with his head level with the driver's window of a BMW sports car. Didn't scrape him on the road once.
At the end of the picture we had two people under. I was inside voice marshalling and ready to cut them off if we lost an engine - once they were on the ground, obviously. We'd be SSE - or at least flyaway - once their weight was off.
All CAA approved!