I had planned to use these earnings on a G8 GXP M6, but, completely missed out on that last year -- my bad. Sadly there's nothing now in the GM lineup that really catches my attention that's in that same price point and is a comparable vehicle.
At any rate, these are old program rules (pre 2001), so there are no redemption limits. Yes, that means ALL $4157.50 can be applied to any one GM vehicle... yes even the sub $10K priced Aveo (and yes, the thought has crossed my mind to buy one of these just to immediately resell, but, since tax will be charged twice, this kind of negates any advantage to the GM earnings).
At any rate I live in Los Angeles area, so, this would work best if you were local to me. Easiest way is you go to your favorite dealer, pick out your car, negotiate best price, and then call me. I meet you at the dealership, apply the earnings to your car, your dealer will confirm that the money has been applied, and your total cost is reduced by $4157.50. You then pay me the $3000, cash please. We then part ways. You enjoy your net savings of $1157.50.
PS: For those of you familiar with the old program rules and the $500/year earning limit over 7 years wondering how I have $4157.50 worth of GM earnings, contrary to belief that only $3500 can be earned in 7 years, you can in fact earn into the 8th year because earnings expire in the month (7 years later) that they were earned, this is independent of your anniversary date. My anniversary date is in august, but, my oldest earnings don't start to expire until Oct. I've been charging on the card this August already. In addition, I made use of a few bonus earning offers (for example last December they gave an additional 5% on all purchases).