Here's an Idea I'd Like Delaware to Consider

In New York, it looks like drivers of low-emission, clean, fuel efficient cars are going to get a discount on tolls. A story on timesunion.com ( Green' cars worth greenbacks on Thruway) says that the state of New York will issue Green Transponders to cars that meet certain efficiency standards and that those transponders will mean discounts on tolls on the New York Thruway. My Prius and I would like that idea to spread.