I live in (barely) rural part of Texas. There's a Dollar General I could walk to if I needed. But the nearest full size grocery store is 15 minutes away by car

I live in (barely) rural part of Texas. There's a Dollar General I could walk to if I needed. But the nearest full size grocery store is 15 minutes away by car -- doing 60mph for most of the way. It'd be a 5 or 6 hour round-trip to walk -- maybe 2 hours to get there, maybe 15 minutes to shop, and 3 hours to walk back laden with groceries. Without the large volume that a vehicle could carry, that walk would need to occur quite often. With a car, I just stock up groceries about once every 4-6 weeks and it all fits in my trunk.