Someone worked out that if even a third of the cars involved in the Washington, D.C. traffic jams of a few days ago were electric, the cars would still be clogging the highway. Supposedly, the occupants would either use their battery to run the heater/heat pump, or save it to move the vehicle when the traffic cleared. This guy posited that most would choose to avoid hypothermia and frostbite and would opt to run their battery down. When the traffic started moving, these cars would not have the juice to make it to a charging station. I know all-electric cars don't work well here except for commuter vehicles. What do you think?