This type of thing really aggravates me with the US EPA and government. 60 MPG can be had by everyone if th eEPA would just pull their head out of their rear end. All that has to be done is use diesel passenger cars.
I have been waiting for the Honda Diesel Accord for 5 years now. Unfortunately the EPA raises the emission standards every time a manufacture announces a US release. so what does the EPA do? Change the standard to block it. Diesels are cleaner than gasoline ICE. WTF are they doing?