That story is in his memoir, which is about as blunt and unsparing as any I've ever read, especially with regard to how far down the rathole his meth and freebase cocaine habit pulled him.
IIRC he sold his car for drug money, the guy he sold it to died before putting the paperwork through, and Crosby went and essentially stole it back.
If you ever read that book, there's a picture of Croz at rock bottom of his drug habit. A Google images search didn't pull it up. He looked like the after pictures of meth heads you see now - gaunt, hollow eyed, lank greasy hair, pretty much like a bum who ambled out of an alley. The proverbial thousand words sort of picture. /shudder He really looked bad.