AFAIK, just make sure that you can itemize already because 3 grand is less than the standard deduction. Then figure out your total deductions, subtract that from your wages, determine the amount of tax owed by using the tax table, then subtract that amount from what you paid in.
As for the exact amount you'd get back from the worth of the car....I guess it would be the percentage of whatever tax bracket you fall into.
OR, all of this could be completely wrong.
