The latest snow falls across the U.S. have prompted a flurry of commercials from automakers touting the advantages of all-wheel drive models. This one comes from Dodge and shows the new Durango, Charger and Journey, all of which are available with AWD. Nevertheless, we'd say that while power sent to four wheels instead of two does help in certain situations, one should never, ever underestimate the importance of a good set of all season or better yet, winter tires.