Damn this is a good idea. The general problem with "free" is that, without the price signal, overuse occurs. But public transport is orders of magnitude more e

Damn this is a good idea. The general problem with "free" is that, without the price signal, overuse occurs. But public transport is orders of magnitude more efficient at moving people than cars, so even if people use public transport to travel 10x more than they would use a car-- which is a ridiculous assumption-- this would still make cities like 6x less congested if those people stopped using their cars.