Look. These are excelent. A car in them would have to be lit with a couple of speedlights and some diffusion but then they'd be pure money.
If you dont have the lighting already beg borrow or steal it.
Find someone with a half decent car and shoot it in that or similar location, use that to promote yourself to people with decent cars who want pics etc. Theres business and money there and you look like you'd be good at it.