In the cities I'I familiar with, the vast majority of urban parking is in tall structures (and often underground). Although there is a decent argument that multilevel parking structures are less financially sustainable than multilevel apartments.

I'm much more interested in blanketing the suburbs in fast, cheap transportation with low wait times and minimal to zero parking requirements on the urban side. Probably a combination of e-bikes, electric motorcycles and scooters, and UberPool. Then personal car ownership (and demand for urban parking) can fade because it is actually less compelling than the alternative, instead of by fiat.