If you donate automobiles and/or collectibles to a charity you can only take a tax-deductible donation for the actual value the charity receives when the vehicle is sold at auction. This assumes the people involved will get that valuable piece of information back to you in the correct format and that your vehicle is sold at the correct type of auction for the best possible price. You can also receive appraised value if the charity uses the vehicle or gives it away to a needy family.
However, if you donate your vehicle to an automobile museum, in some instances you can get the appraised value as a tax deductible donation if they display the vehicle rather then sell it The museum should issue you IRS form 1098-c indicating intervening use. These are only examples and you should consult your financial and tax advisor to determine what is best for you.