What could be sadder than to have your brand new perfect car smashed after only 2 hours? Luckily it wasn't bad enough that anyone was hurt, but the black bumper was dented in and both lights broken. Last year, in my model S, I was rear ended in a similar stop and go traffic situation. I wonder, when letting up off the gas, do the break lights go on? I hardly use the breaks because the car slows enough without pressing them, and I am wondering if people behind me see that I am slowing. If the break lights don't go on when letting off the pedal, maybe Tesla should incorporate this into the system. I think 2 rear end accidents in a year is uncommon, even in the Bay Area. And I have never been rear ended before owning Tesla Cars 