Congestioncharge.us - Very likely to be implemented in Congested US cities

[iboughta.com]

For sale or lease is

http://www.congestioncharge.us

Following the example of countries like Singapore, Norway or cities like London, it is very likely that the congestion charge scheme will be implemented in congested US cities.

New York is talking about it and asked for consultancy to London to implement a similar scheme in the Big Apple.

For more information, you can visit: http://www.cchargelondon.com

[4u-domains]

yeah, good thinking. It is probably inevitable that this will happen in all major cities accross the world.

It comes down to what they eventually call it, of course.
That seems like a likely candidate. It might be worth you registering similar names as a defensive measure.