Check 1. the amount you paid for the car
and 2. The fair market value of the car when you first started using it for business.
The 'AMT dep allowed/ allowable-1' amount is the largest amount you can put into the Fair Market Value Amount.
Basically, its telling you based on the Amount you paid for the car and the time between then and when you first used it for business, The Amount in the [AMT dep allowed] is the highest your vehicle is worth
