Part of the issue is the fuel tax. That is easy to fix...up the fuel tax and force people to higher mileage vehicles.
The other part of the propbem is what is measured for emissions. The US measures NOX (nitrous oxides), The rest of the world does not use this form of a pollution index. When you have to reduce the NOX you have to decrease the compression efficiency...ie more fuel.
So it is a problem with the government, out stupid leaders and the EPA. The greenie wiennies have the American public so afraid of diesel fuel it is not funny.
Another issue is the refineries here are not set up to deal with the mix of fuel that is heavy toward the diesel end. The diesel is the first thing off the column and it is less expensive to make. So what do they do with all of the excess gasoline? See how the problem keep s getting worse.
2013 HitchHiker Champagne 38RLRSB, 2012 F350 Dually crew cab, 6.7L,
Mobile- Yaesu FT857D w/ Lil' Tarheel II antenna and Larsen dual bander, Turbo Tuner.
Base unit...Kenwood TS480HX, LDG AT200 Pro tuner, Eagle One Vertical and Windom 80 meter dipole.
Standard Schnauzer..her call is K9WOOF