They look like they're having fun-kinda. It looks like nothing helps in the deep snow, except maybe those unbelievably fat tires they use in the Iditabike.
I need to get studs for next year as my drive back from the gym this a.m was slow, a long snarled backup. But as I sat there I wondered whether I would have done better on a bike, not sure I would have as the cars were right up against the snow, no room to maneuver though I probably could have taken some alternate routes through backyards and stuff.