I remember as a kid in the 70s I saw a car on its roof with two maybe four people in it, this happened at a beach the car I think went too far to the right on a narrow lane and onto a dune then up a steep part of the dune causing the car to tip over.

The car was a purple 1970s muscle car with rear really wide slicks I think it was an AMC AMX.

I distinctly remember (I was probably about 5 to 7 years-old) the loose change on the inside of the roof I guess as a kid seeing quarters it may as well have been gold bars.