This tragedy has been bugging me. I read the reports from links posted in this thread, heard the TV clips linked in a couple of those reports. The driver (Christy Littleford) did stop -- another driver behind her saw the SUV stopped on the side of the road, it's front end smoking. This bugs me even more: front end smoking, flat tire, bike lodged under the SUV -- it had to make noticeable noises when Littleford started driving away. The driver behind her stopped and remained with Pettigrew until help arrived.

That made me think what would I do. I know I'd be shaken and freaking out. I probably would hesitate to get off the car immediately. I think I would look around (depending on where I am), turn the emergency lights on, punch 911 on my cell and then get off the car, ready cell phone in hand, to see what happened. If I had a significant other at home, I would probably call home (perhaps Littleford's husband told her to go home and not get off the SUV?).

It sounds like Pettigrew did not have lights, so it is possible Littleford did not see her. Reflectors/reflective clothing require light in specific angles to be effective. So an accident is possible, but driving away is inexcusable.