Say, I wonder if somebody might be able to shed some light on something. I'm pretty sure I know the answer to this, but thought I'd ask. I'm asking for a friend because she asked me, and I think the dealer sent her on a wild goose chase. She bought a new car ('09 Chevrolet Cobalt), and apparently didn't do the homework to find out ahead of time that the ultra bargain basement trim level didn't come with air conditioning. So the dealer told her to get pricing on what it would take to put it in. Uh huh, the ones who should know are telling her to get pricing. I'm inclined to believe that putting the factory air in is NOT practical and it might even be cheaper to trade up to one that does despite the depreciation. Is there any kind of aftermarket add-on system? Short of going ghetto and putting a home window unit or RV unit on (don't laugh, I've seen both!), does such an aftermarket system exist?