Anyway to change cars with GMAC?

[rondocap]

I have an H3, since it came out - but in August we switched over to a 2008 finance.

It's a good vehicle, but we feel like it may be time to switch to a smaller and cheaper car, since we went from a 2006 to the 2008 and perhaps it was a mistake.

Is there a way for us to either switch the H3 into perhaps a cheaper Cadillac, therefore reducing payments, or going to a different car maker all together? There is still a lot left to pay on the finance of course since the car was bought only in August of this year.

Are there any options, or are we stuck with the car pretty much?