It costs $100k to blow up a car now-a-days? I know people who will do it for free, if you piss them off enough!
But really, your friends Prius, a camera rental, and a little explosives. You're film makers!, be creative and get it done for under a couple grand. The site looks alright, use some computer magic on the shot.
You might have better luck if you outlined the expenses, I'm sure people won't want to be donating towards your rent or something.
Good luck