[foota]

I think you'll find building sufficient parking on top of skyscrapers will run into cost and weight issues.

Cost, because much parking is currently on street or in dedicated low cost parking structures.

Weight... For obvious reasons.

[fsloth]

I don't think those are valid arguments. Just because current urban design is built around a specific transport mode does not mean it could not be rebuilt to facilitate another.

Not remodeling. Redesigning. It's very straightforward to move and redesign urban centers. Lot of countries do it all the time. The proble.s are not related to human nature or engineering, but to purely finances.