I live in boston, and am flying in and out of SF to go to burning man this year. I was thinking of renting a car in SF, and I was just wondering if anyone had some helpful info as to where might be a cheap place to rent from?!? I also know that cars accumulate just as much dust as we do out on the playa. I have used covers in the past but they didnt seem to help too much. Does anyone have experience returning a dust covered car to a rental place?? Thanks!!!