You can't "get rid" of real estate for cars.
Why not make it mandatory to have a certain number of trees per unit size of parking lots? Cars are cooler in the shade and you can provide employment for upkeep of the trees and cleaning.
99.99% of suburbanites couldn't afford their lifestyle if it weren't for obsurd gov subsidies of infrastructure / petrol industry.
Don't know how it is in the US, but over here in France (and I presume most of Europe) I'm not sure how much the petrol industry is subsidized, given the high taxes levied on gas – around 60% of the price paid at the pump goes to taxes [0].
Of course, this being France, taxes are themselves taxed [0], but still...
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[0] https://www.economie.gouv.fr/cedef/prix-carburants
In French, but the relevant quotes are:
In France, taxes account for approximately 60% of the gas price at the pump.
20% VAT, applied to the whole amount, TICPE (Internal Tax on the Consumption of Energy Products) included.