Looking at the crime scene photo, I can say that the driver
probably reversed at high speed. She probably also accidentally hit
the accelerator instead of the brake when she was rolling
downhill.
Considering the length of the tyre marks, they wouldn't have
been so long if she had braked immediately. Even if she didn't step
on any pedal, I somehow doubt that the car would have
enough momentum to roll backwards that far if it was reversing
slowly.
Then again, I'm no CSI, and I'm no car expert. So don't take my
word for it.
What I can say is that if you reverse into the parking lot
slowly and carefully, there's a good chance that something like
this wouldn't happen.
