GFEI’s work in North America (US, Canada and Mexico) is led by the International Council on Clean Transportation (ICCT)
ICCT have led extensive work on the design of US Corporate Average Fuel Economy (CAFE) standards.
You can read more here: http://www.theicct.org/policies/us-cafe-standards
In addition, the University of California, Davis (UC Davis) and the International Transport Forum also provide analysis and capacity building to these markets.
The International Energy Agency (IEA) provide global analysis and vehicle efficiency training.