You should have to set a maximum as well as a minimum on a kickstarter project. The first time one of these massively over subscribed offers turns out to be a total scam, or just fails there's going to be a lot of unhappy people.
I think pre-sales projects like this are really interesting, but it doesn't really match the donation model. At a minimum, kickstarter should escrow the money and release it in $xx,000 chunks or something, and ensure people are getting what they ordered. Even better would be to not have people paying until they were reasonably close to an actual delivery date. It's one thing if you're waiting for upfront R&D, but it's another thing if you're simply on the ass end of a one year waiting list.