Hi ALL! I just got the giant box of train stuff. I found these plastc cars on the bottom, I'm trying to figure out who made them. Could they possibly be cars for a "load" on a Auto Carrier ? I see a couple of Corvettes, maybe an Eldorado and some Thunderbirds maybe? YA, there all filthy ! The ones with bottoms say made in Hong Kong and a number, the Corvettes have the # 5615.