Then you'd probably not consider most of what is cities a city. I live in >500k fully walkable european city with okay-ish public transit. During peak times, i

Then you'd probably not consider most of what is cities a city. I live in >500k fully walkable european city with okay-ish public transit. During peak times, it's ~30 minutes to get to downtown by both public transit and car. But most of offices are located outside of downtown(=oldtown) area. One office area is 30min+ by public transit (and requires a transfer or long walk) or 10min by car, even during peak times. Office park on another side of the city would be well over 1h by public transit, but 30min by car. There're locations that take 3x longer by public transit and/or require elaborate transfer plan than driving. Difference gets even bigger if you can start a wee earlier/later.