Biking is pretty routine in college towns. Assuming that's East Lansing or Ann Arbor, you probably have some 20k bike commuters. There is also a huge inventory of local used bikes to sustain the culture, and city councils will want to protect students and readily build bike lanes, especially if there had been accidents at tricky intersections. In other towns, not so much, and the absence is conspicuous both in seeing other riders on the road and the infrastructure to support biking.