My best winter car was a 1967 Chevy Nova station wagon. I could never figure out why it was so good but I bet it had something to do with the light 194ci inline 6 and the 2 speed slush omatic. Being it was a wagon it probably had more weight on the rear drive wheels than say a heavy V8. It would just plow through snow when my friends cars would just sit there and spin the tires.