Should America actively work to reduce the amount of parking lots it has?

The states of Illinois, Indiana, Michigan and Wisconsin together have 1,260 square kilometers of paved parking lots, or 5% of urban land use. That's about 2.5 parking spaces per car, but that's not even counting street parking, private parkings, and parking structures. If you add all of this together, you get about 3 to 3.5 parkings per car and a higher percentage of urban land use. The problem is that for the longest time, nobody really had a plan. Most cities have no idea how many parkings they have (the city of San Francisco is one of the first to start counting its parkings), so they are very hard to intelligently manage, and it's difficult to jsutify removing a few to add a bike lane or a bus lane, even if these would bring more benefits to the locals. Ample parking spaces may seem like a good thing until you consider the negative effects of all that pavement...