Starring the legendary James Mitchum! Probably because Mitchum also starred in Thunder Road, which is the grandaddy of all "bootleggers in a fast car" movies, and which was originally written with Elvis Presley in mind for the lead role.
I didn't realize until my late teens (mid-00s) where the term came from. Still call them that to this day. Never cared to find out if they have a proper term.