If you drive north or south on I-95 let's say - which is one of the major (if not, the major) north-south corridors on the East coast of the United States, you could get kind of a skewed idea of what type of food is offered. For example, on I-95 between New Jersey and Southern Virginia, which is about a 300-400-mile (560 km) stretch, you are not going to see a single fruit or vegetable stand. And in most cases, you are going to see either trees or on-off ramps. You will see various signs pointing out that 8 different familiar fast-food places are at that exit. For example, a Taco Bell, a Denny's, a McDonald's, and a Burger King. Along with an Exxon or Shell gas station. After a while, someone might get the impression that that is the only thing being served, but basically, the signs are for busy or tired commuters who want to get something quick and familiar and get back out on the road.
You will also be hard pressed to find a lot of nice houses along these roads because people with enough money to build nice houses don't want to hear highway traffic 24x7x365.