Tom Vanderbilt illustrates his case against too many parking spots by noting that Purdue University researchers found that if "all of the vehicles in the county were removed from garages, driveways, and all of the roads and residential streets and they were parked in parking lots at the same time, there would still be 83,000 unused spaces throughout the county." Felix Salmon agrees:
For me the biggest and most invidious cost of parking lots is also the most difficult to measure: the way that they kill any attempt at decent architecture, both on the level of individual buildings and on the level of city development more broadly. Your favorite buildings, your favorite cities, and your favorite vacation destinations all have one thing in common: a distinct absence of massive parking lots. So why are these things mandated by zoning regulations across the U.S.? It makes precious little sense, and it’s high time that minimum parking requirements died a long-overdue death.