Earlier quoted context omitted.
Making public transit better would also really help. Then you can access those things 10m away in a similar amount of time. For large items you'd use a car or pickup for, businesses would adapt by offering delivery. It's definitely possible, but the infrastructure investment would be gargantuan.
I'd love better public transit. But public transit in rural areas (and there will always be rural areas as long as there are farms and ranches, and communities to support them) is minimal to non-existent. Use is infrequent, meaning it would either have to be subsidized, which never makes folks in the city happy, or cost an arm and a leg per trip, making it impractical for rural users.
With that population density it's never going to make sense to put something like light rail on that route. So these people will continue to use cars. And that's fine.. hopefully cars continue to get safer and easier on the environment.
I think it's the urban/suburban sprawls akin to LA that really could benefit from better transit/walkability.