A honest question for people who say getting rid of street parking is an economically viable idea - would it be economically viable if there was an underground road system purely for bikes, where there would be no way for cars and larger vehicles to share the ride? You also don't need to worry about the weather.
It would not be economically viable because underground tunnels are enormously expensive to build. The reason they can work for subways is because you don't need to excavate that much space for a subway train to move a whole ton of people. While bikes take up an order of magnitude less space than cars per person, subways take up another order of magnitude less space than bikes.
