That's right - not FUBAR, but CHUBAR. And it's nothing to do with granola-style snack products either.
CHUBAR = CHavved Up Beyond All Recognition
Description of a car that has been so heavily modified with dodgy spoilers and so on that it is hard or even impossible to tell what model it was to start off with.
Not quite sure why this one occurred to me during a week when I have been testing two extravagantly body-kitted Vauxhalls but there we are.