Car dealerships are saying good riddance to 2009—which was a clunker of a year in more ways than one—by trying to get rid of as many vehicles as possible. As the year’s end approaches, there are tons of rebates available to car buyers, and sales managers are expected to be especially willing to negotiate in order to move inventory. Also, if you close the deal before January 1, there’s a bonus: You can deduct taxes and fees on your 2009 federal income tax return.