I can think of something positive that came out of this. First of all I am sorry about your car damage. The important thing is you were not hurt. A friend of mine's car rolled over him in a similar situation. By the look of his injuries it did some damage to his head and he died of a stroke a few months later. He was in his 60's. Car bodies are easier to fix than human bodies. As a note of interest a couple of days ago my Boxster's handbrake had to be pulled up hard to engage. I found this out when I depressed the clutch and the car started rolling when the handbrake was applied 2 notches only.
Am sorry about your damage.