Yes. If the amount you receive on the sale is more than you paid for the car, the different is taxable gain. However, as is the usual case with a personal vehicle, where the value typically declines over time, any loss on the sale of a personal vehicle is not deductible (you cannot take a capital loss on personal use property).
A statutory method of depreciation allowing accelerated rates for most types of property used in business and income-producing activities during the years 1981 through 1986. It has been superseded by the modified accelerated cost recovery system (MACRS) for assets placed in service after 1986.