NoWideLoads (please) I know. I was afraid to post it. But, couldn't somehow help it. It was borderline. That's why I took the trouble to glue a plate onto it
You could go with "SEATS 20". But the car in the song was a Chrysler... Here are a couple more ideas: LONGRUF BOXWGN (That generation of GM wagons are often called "box wagons") INDA80S (As in "stuck in the 80's) NOTASUV DOINK (still like that one....)