Wow, that is almost exactly what happened to me two weeks ago. I was getting ready to trade in my 350 for a new 370 and just after I drove back from Carmax to get an appraisal quote, some girl in an SUV backed up into me in a parking lot. I had just finished pulling out of my space and was about to go forward when she started pulling out of her space on the other side. I must have honked and shouted for 2 seconds but she just plowed right into me. She got out of the car and said, "oops...I always forget to look behind me when I'm backing out."
At any rate, it pushed back the purchase of my 370 until it all got fixed. But I am happy to report that I am now the proud dad of a new 167.2 inch, 3278 lbs baby Z! And she's blue!
Now I just have to avoid entering any parking lots...