Pre-Orders are non transferable, so not sure there is much of a market. There are also not really set places in line. Stores were open on the East Coast were open before the West Coast, but West will ship before East. And current owners cut in line somehow as well.

I am sure you could pay someone to keep their pre-order open, buy the vehicle, then sell it to you afterwards. But that seems like a good way to get screwed, on both sides of the deal.