Hmm...my CD liner notes list this bit of lyric as "travelling in a fried-out combie."
I think your version makes more sense.

Aksherly, mine was a mondegreen, but a semi-intentional one. The van is most often spelled Kombi, and that is the original German spelling. The "Vdub" was my childhood misinterpretation, used here as an homage to international copyright protection laws.