In Flowing Faster, the Financial Times offers commentary on the London congestion charging program, and predicts that the system will spread rapidly to other areas where traffic is a problem.
"Given the ferocity of the opposition to the congestion charge, just as important is what has not happened. There has been no chaos. The technology has not crashed. The predicted mass non-payment campaign was still-born. Businesses within the zone have not suffered unduly. London's creaking public transport has coped. The public does not judge the charge to be unfair, either to motorists or to the poor. And Mr Livingstone still seems quite likely to be able to add further chapters to his political career."
What's it going to take to get this in New York? I've heard suggestions that there's a strong political lobby backed by parking lots owners that would fight such a program.