I was stopped at a red light.  Through my rear view mirror I saw the car speeding toward me.  The driver was looking down operating a cell phone in his lap.  I considered putting my car in park because the rapid acceleration in a crash is what damages, but I did not want to limit my options.  As the car barreled toward me at full speed I applied my brakes hard with both feet and braced for impact.  The driver never looked up.  His car slammed into mine, collapsing my seat with the explosive force of the rear-end collision.  Sharp pain stabbed my neck and shot down my shoulder, upper back, lancing down my arm and making my middle and ring fingers suddenly go numb and tingly as if I had hit my funny bone.  Two weeks later the pain has decreased to a constant annoyance, but my fingers are still numb, my neck hurts, and the tingling has spread to include my little finger.