I once met a guy who seemed to think quite highly of himself for surviving three Michigan winters in a Pontiac G8 shod with the stock summer tires. His expert advice for anyone attempting such idiocy? "Never stop at a red light in the snow. You'll never get going again." Six feet under, in Westminster Abbey, Charles Darwin smiled. If your car can't find the traction to get to 10 mph, your game plan probably shouldn't include running red lights.