It's the idea that Chaka Fattah's not supposed to talk about anymore: the Center City congestion charge.
Before there was controversy over Fattah's idea to lease the airport, there was controversy over his idea to study putting a congestion charge in place for cars entering downtown.
Fattah doesn't talk about that idea much anymore. He said at his environmental announcement that his campaign told him to shut up about it. The voters weren't too keen on the idea, you see. Pay to drive downtown? Fuggedaboutit.
Now, New York Mayor Michael Bloomberg is proposing the same thing in NYC. From Newsday:
Trucks would pay $21 and cars would pay $8 to enter Manhattan below 86th Street on weekdays between 6 a.m. and 6 p.m. The major thruways along Manhattan's east and west sides would still be free. Also, commuters who already pay a toll to come into Manhattan via tolls and tunnels would pay the price of the new fee minus that previous toll.