That seems backwards to me. When I lived in suburbia grocery shopping was always a "trip" 5+ min drive, find a place to park, walk through the parking lot into a large store, etc. Grabbing even one thing meant at least 15 min of overhead so you'd usually try to stock up.

Whereas now I can be inside of three convenience stores and a full service grocer within 3 minutes of walking. If I drive I pass several other full grocers on the 8min/2.5 mile trip home.

This is in Milwaukee, not a NY or Sf type of place. Most people in my neighborhood still drive everywhere, you just don't have to.