I can make you an extra $1k a week but it's not TheMan-Approved...
Reselling the cars is a great idea, esp if you don't follow the guidelines (aka laws)
I tried a drop-ship company through eBay...didn't work for me, prob due to the fact I slacked on the product research...RESEARCH anything for resales, like the above have stated.

Got a customer. Gotta go.