2017 Alternative Fuels Coal Fuel Economy 
Green Car Congress
OCTOBER 11, 2017
The most recent GREET versions are the GREET1 2017 version for fuel-cycle analysis and GREET2 2017 version for vehicle-cycle analysis. Implemented new pathways for fuel cell electric medium- and heavy-duty vehicles powered by gaseous hydrogen. Updated the fuel economy and vehicle weights of light duty vehicles.
Green Car Congress
DECEMBER 5, 2012
quadrillion Btu in 2025, due to incorporation of the model year 2017 to 2025 GHG and CAFE standards for LDVs. quadrillion Btu in 2035, as a result of fuel economy improvements achieved through stock turnover as older, less efficient vehicles are replaced by newer, more fuel-efficient vehicles. mpg in 2025.
Green Car Congress
APRIL 14, 2015
The United States transitions from being a net importer of natural gas to a net exporter by 2017 in all cases. US natural gas net export growth continues after 2017, with annual net exports in 2040 ranging from 3.0 quadrillion Btu in 2040, as increases in fuel economy more than offset increases in LDV travel. mpg in 2040.
Green Car Congress
NOVEMBER 13, 2011
The outlook for oil demand differs sharply between the three scenarios, primarily as a result of the different assumptions about government policies, such as fuel efficiency standards, removal of end-user subsidies and support for alternative fuels, and the extent to which they succeed in curbing oil demand.
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