An emission tax would be interesting. Hook something up to the tailpipe that read all the emissions as they left which has a cellular antenna in it which would feed into a bill. Possibly like the European Television license, one would be charged a monthly fee based on having one, and then more on top of that for the emissions. I like it. So everyone would have an allotment per month that was geared towards cars that trucks would always go over.
I think the problem would then be that the wealthy would be able to pay it off easy and they would become a bigger wealth symbol; but it would help keep the majority off the streets.
Lets get this passed! Brumbaugh for President!