in Alabama, car license taxes are a function of two things: 1) value of the vehicle, 2) weight of the vehicle. The calculated tax is added to the 'tag fee' of about $20 to figure your annual cost per tag. For our older cars, once they are 30 yrs old and preserved as 'orignal collector/vintage cars', we pay a one time fee of $20 and it's good for LIFE... (used to be 25 yrs, then they decided they needed to wait longer to bestow that privilege. isn't 25 or 30 yrs long enough to pay taxes on an automobile? especially ones that are seldom driven except to car shows, parades, car club meetings, etc?