Stupid question time... From watching Ice Road Truckers and from this thread, I get the sense that break downs are more common than down south. How much of this is due to the extreme conditions and how much because companies are running old, worn out rigs? Also...many of the trucks seem to be standard highway tractors. Wouldn't it make sense to invest in new(er) extreme duty trucks, say with power also going to the front axle and also invest in figuring out a way to effectively winterize them? Wouldn't that mean more money in the long run because they can run more consistently during drops in the temp and also degraded conditions?