How to get rid of a 4 month old car?

I've owned a '06 scion xB since Feb '07 and am making payments to Toyota Financial. I'm trying to get rid of it as fast as possible but I don't know how to do that (don't want to trade-in)? Do dealers buy cars back? or am I forced to sell privately (which I really don't want to waste the time with)? Does anyone have any tips, suggestions or options I could use?