same shit happen to my Accord. I was park on a slight hill and i know my car was in gear and the parking brake was up. I was working right beside it at my friend house. Suddenly my car alarm went off and then i turn around seeing my car slowly rolling down the hill. That was the worst thing that can happen, seeing your ride rolling down the hill and hitting a illegally park unregistered taxi cab. The good thing i only messed up the driverside fender and broke the tie rod end and i have to replace the whole knuckle. The next day it was driving again The fuc* part, the illegally park taxi file a claim against me and got 4g's out of my insurance, even though the car only worth 1000 buck