Here’s a recent article from the Coloradoan with some gotchas to watch out for and some great ways to maximize your deduction. Take this one for example:
“Only if the charity uses the car in its operations or materially improves the car before selling it will your deduction be based on the car’s fair market value at the time of the donation.”
Otherwise your deduction will only be for amount that it’s sold at auction for, which will be a lot less.
Source article: http://www.coloradoan.com/article/20111002/BUSINESS/110020322