This is a good look at parking oversupply, its harmful consequences, and possible reforms, all from a local perspective:
"Given the abundance of parking in metro Phoenix, planners and policymakers should reform minimum requirements, and provide opportunities for both improved parking management and parking space repurposing. Doing so would not make it meaningfully more difficult to park, and could pay substantial environmental and social dividends. At a minimum, parking requirements should reflect the large number of current parking spaces, and should more aggressively promote opportunities to share existing spaces."
http://transfersmagazine.org/magazin...parking-space/