If my truck is not available/feasable, I can go 90 miles in 10 hours on no road at all on my Kodiak ATV, and the only thing I am going to tire is my thumb. And I can pack 200 lbs on the racks, including a spare gas can--which can get me another 90 miles. Bicycles are nice in Europe or the Eastern USA where there are a lot of paved roads, but it is not realistic to rely on them here in the Rocky Mountain West. If you are going to bug out here, take off in your car/truck until you run out of pavement, then strike out on your ATV or motorcycle.