That's not a bad idea. Hell, I'd make the full first payment today if it came with some kind of guarantee for delivery. I'm assuming some of the issue, though, is that there's an optimal way to produce based on configurations (build 10 cars in a row with tow hitch, then 10 without, etc.) that would throw everything out of whack. It doesn't help that this is a community that would be both super passionate about their purchase, and probably tech-savvy enough to at least waste their days away browsing forums and reverse engineering all of Tesla's systems in order to find out when they can drive their fancy new computer.