A city whose citizens mostly drive is less independent than a city whose citizens mostly ride bicycles. Bicycling infrastructure is orders of magnitude cheaper to maintain than the same for heavier, motorized vehicles. It's not just the roadways: you need service stations, tire shops, parking lots and garages. Gasoline engine cars need gasoline distributed to stations all over the place and emissions testing. All of these things take up lots of space because motor vehicles are big.

All that bicycles really need are a (much narrower) right of way and some cheap pavement. Maintenance can be done all at home, even in a small apartment. The apparent independence available to motor vehicle drivers is an illusion afforded by massive private and public investment.