Agreed, but that's an increase in scope of the requirements/desires.
I still think it'd be possible to build a neighborhood where the HOA bans driving cars. Yes, it'll still need roads for emergency access (which you'd want anyway, fire trucks and ambulances do need to get in when needed).
If there are minimum parking space rules in the area that's a bit annoying but shouldn't be a showstopper. Just because the parking needs to be present doesn't mean it needs to be used for that purpose, so the HOA can still ban cars. You can then use that driveway for projects, play space, etc.
I still think it'd be possible to build a neighborhood where the HOA bans driving cars. Yes, it'll still need roads for emergency access (which you'd want anyway, fire trucks and ambulances do need to get in when needed).
If there are minimum parking space rules in the area that's a bit annoying but shouldn't be a showstopper. Just because the parking needs to be present doesn't mean it needs to be used for that purpose, so the HOA can still ban cars. You can then use that driveway for projects, play space, etc.