If I sold one of my welders, or other pieces of equipment,it would be 100% profit because of several reasons----it might of been given to me as a sponsership, or I have taken depreciation on it over the years and may be totally depreciated which would make the sale 100% profit on the item.

On a car---if it has been titled to me personally(Not Clayton Racing) , and has not had any business travel expenses associated with it, won't be deemed taxable--

IF, I have had the vehicle untitled in myname or kept the title open from another source, it will be considered taxable---whether as sales tax(amount of sale), income(IRS) (profit or loss)------------soooooo, I could lose thousands on a vehicle but have to pay sales tax on dollar amount of sale no matter what the cost or profit/loss numbers were--------------