Pickup trucks are the worst. Last winter, I saw a woman slewing 45° to the right, then 45° to the left, back and forth for a half mile during a snow storm. Partly the driver, but also the lack of rear traction with 1000 pounds of bricks in the bed. I was in a FWD Honda Fit, which was having no traction issues whatsoever — and I maintained a long following distance behind that truck.