Kicking off the $1,000 incentives is the 2013 Buick Regal. Named as an IIHS Top Safety Pick, the Regal will give you some peace of mind during this busy time of year, and with a price tag under $30,000, that's not too bad, either. With a fuel economy rating of 18/29 mpg city/highway, the Buick Regal delivers good performance across its lineup. By the end of the month, if you haven't financed the purchase of your new Regal through Ally Financial Inc. with an APR of 3 percent, you're out of luck. This deal is only good until the last day of the month, and then your treat will turn into a trick.