Of course it would scan just as well (and be just as true to life)
with "a fat geezer in a mini-van".

Third verse could become something like:

Got his foot on the gas and he's tail-gaiting me

Gotta get down to the boozer cos he's dyin' for a pee

He's roaring like a monkey that has fallen from his tree

He's got his face in the windshield and he's screamin at me