Short answer: We're fronting the money (credit) and want to extend the deadline as much as possible to achieve the goal!
Long Answer: We decided to put the deadline just after Burning Man because we figure the project may get increased publicity during BM so may get more backers that way. We’re already purchasing lots of materials using our volunteer team’s credit cards so whether the money comes just before Burningman or just after, is not much different. Either way, it will help pay down a portion of the $40k cost of the materials for this project. Also, just to clarify that none of the team is getting paid for any of the 1000’s of hours of volunteer labour involved in this project.
Moreover, the project will go on to be improved beyond Burning Man. We’ll continue to upgrade the controls and extend the overall length. Burning Man is a big milestone, but it’s not the end of the line.