Hey fellas: While I was at Wal-Mart this afternoon, I noticed some HO and 1:72 scale automobiles for fairly cheap (about 7 bones for a 5 pack of purported 1:87 scale and about 2 bucks for a 1:72). They ranged from classics to modern sports cars. Figure a few quick dabs of detailing paint, maybe a wash and drybrush, and they'd be a good cheap addition. FYI. cheers.