> The goal of the congestion charge is not to make money off cars in London - it's an attempt to reduce the number of cars in London. Initially, yes. But it's

> The goal of the congestion charge is not to make money off cars in London - it's an attempt to reduce the number of cars in London. Initially, yes. But it's now a revenue stream, and it's really hard for governments of any philosophy to gracefully accept a loss of revenue. There is also the Shirky Principle: "Institutions will try to preserve the problem to which they are the solution"