Then you'll ask for receipts of what they pay to use the roads and they'll be out.

Regarding free transit, I think part of the reason it can fail is the socioeconomic situation. In places that rewards the rich and abandon the less fortunate, it's deemed to fail.

But also, I think that when people have to pay to use transit, they'll be less willing to act as a warden, so if they see someone doing something negative, they'll keep out, thinking that it's the responsibility of whoever is taking their money. Meanwhile, when we see public transit as a common good, we are more willing to act to keep it great.

The maintenance cost graph is very eye-opening.