Where can I have sex?!? 😣

My boyfriend and I both live with our parents still (yeah yeah we're losers) and neither of them leave the house long enough for us to be alone together. We were using my grandmother's house for a while because she was staying at my house, but that's not really an option anymore. We tried it in my mini cooper (LOL) and it was okay but pretty cramped. He doesn't have a car. My sex drive is sooooo high and it's TORTURE not getting any. I'm okay with doing it in my mini because I'm desperate but the problem is finding a place to park the car. Any ideas?