Colin, physics isn't just a good idea, it's the LAW.

I saw 4 guys in a Mustang get killed when they were going 80 to 90 mph on a wet freeway and spun out, slamming ass-end first into a bridge abbutment. They were trying to outrun the Detroit police at the time.
They died trying.
Pre '69 Mustangs had drop-in gastanks in the trunk, making any king of rear end collision a potential fireball.

Most horrific thing I've ever seen in my life.