I think that I might send both the dealer and the company a record of the mileage you driven and tell them that you expect to be reimbursed for the cost of the fuel, oil and wear and tear on your car (to the extent that the IRS allows for reimbursement for job travel) and for any time you have been required to take off work to return it. Make it up like a bill, nicely itemized and send it. While you may not get actual $$s, you may get a gift card for some special feet or fabric. It's worth a try.