Where have you been that has both? From my reading, it seems like cities need to prioritize walkable / bikable OR cars, but I've never seen example of a city doing both well.
IMO Portland is actually kind of like this (for now). I've heard Berkeley, CA sort of, too.
In Portland (where I live), I have a driveway and convenient street parking right outside my house, but I can also walk to many shops and restaurants, and have a pretty good busline nearby. I usually take the bus if I'm going downtown, so I don't have to worry about parking. But in my part of town, which is less dense, I can conveniently drive or bike. Parking can be a little annoying on this side of town, but it's usually okay.
That being said, Portland is clearly moving in a denser direction. Housing has gotten too expensive here, and the only way out of that is density. Our cycling infrastructure and public transit are decent, but need to get better IMO. All of this will probably negatively impact the car-friendliness, but I think that's the right move for Portland right now.
It's desirable only because they don't build the outer burbs this way. As you drive out of the city, the time of building gets later and later. When you hit some point where the homes were built in the 60s, suddenly the walkable neighborhoods, which were the standard before then, make way for huge, sidewalkless developments.
If they just built more of the commenters neighborhood, and my neighborhood, there would be more desirable land.
Towns tend to be this way, not so much cities. I live in a single family neighborhood in a large city and it’s both walkable and drivable. It’s not great driving beyond a 1-2 mile radius, but I don’t need to go that far more than once a week. My kids’ schools are all walkable distances, 30 minutes tops, or a 5 minute drive. Same for the gym, restaurants, bars, the grocery stores, etc.
Ottawa, Canada is pretty good for this. It's a pretty small city but has a few neighborhoods that would be considered walkable, while in 20 minutes you can be out into the country. Compared with Toronto or Montreal where in 20 min if you're lucky you've entered a highway so you can sit in traffic for an hour to clear the city. Not sure about in the US.
