It's plainly obvious that the amount charged can't be related to the cost of the marginal traffic caused by the taxi. Even if you discount for the fact that a t

It's plainly obvious that the amount charged can't be related to the cost of the marginal traffic caused by the taxi. Even if you discount for the fact that a taxi is driving more often, it would mean that normal private car owners are inducing tens of thousands of dollars in negative externalities each year.