Those low interest deals are usually either take the low interest or take the cash incentives but not both. Often times it's better to take the cash back and hit up the credit union for the loan.

I still haven't listed my 98 Ranger 4x4. 115,000 miles. Hate to sell it but I never drive it any more and am paying insurance and tabs every year so need to free up some time to list it for sale.
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"You learn more from losing than you do from winning." Lou Pinella