I've lived in a somewhat similar place, Rancho Murieta, CA. It's not a city itself, but an unincorporated community that was originally built as summer homes, with golf courses directly inside of neighborhoods. Permanent residents moved in and did local trips via golf carts, but the local politics meant that while you could get to all the shops and such, the highschool wasn't built close enough and instead was a few miles down a 55mph highway. Most people didn't work locally either, so cars were still needed when I lived there.