[ghaff]

There are still plenty of cars around college campuses and parking is a perpetual issue. Certainly faculty and staff (and some students) drive in and park daily. And even a town built around a relatively small college like Hanover NH still has a population of over 10K people.

ADDED: But, as others have noted, once you drive somewhere at least relatively close to where you're going, at least small to mid-sized campuses and associated towns are generally designed to let you walk to stores/restaurants/etc. fairly easily.