Not if you stole it, but if you copied it so we both got a perfect copy of the car i would gladly give that to you for free.
What if you built the car and it cost you $15,000. And you would gladly make a copy for anyone that is willing to pay you, say, $50.
And you are hoping you can get enough people to buy it at $50 to recoup development costs, invest in future car production and make a profit for yourself (you don't work for free you know!).
How many people are you willing to let walk away with a copy of your car for free?
EDIT: Just because someone claims they would never have paid you in the first place would not factor in my decision making to answer that question.