I disagree, John. Diesel puts
I disagree, John. Diesel puts out more CO2, but since that's a questionable reason to limit it, let's look at your other points: diesel costs more per GALLON, but not necessarily more per MILE. It depends on the application, but having more energy per gallon than does gasoline, for most it seems it would end up on the better end. Unless you do only city driving, then things swap. The diesel Passat versus 5-cyl gasoline, for example, has more than 10mpg to its credit and, even accounting for after-treatment costs, is still cheaper per mile. Particulates in today's diesel engines, even big rigs, are next to nil by comparison thanks to scrubbing technologies and EGR. When I was driving over the road, my new 2006 Kenworth put out very little emissions. I could stand on the smoke stack and breathe normally while it was running. The trailer never had black on it from the stacks either. I saw far more smoke from the Rigmaster generator when I was parked than I ever saw from the stacks off the CAT15.