New Vehicles Leave MPG Standard Behind.

The article reports on the introduction of hybrid electric cars which could spark an overhaul of the miles-per-gallon (mpg) standard. A flaw with the mpg standard is highlighted by the high mileage claims for the Chevrolet Volt and other plug-in-automobiles as automobiles rely on multiple fuel sources. Another problem with the standard is the failure of the U.S. Environmental Protection Agency to finalize rules for how it will measure fuel economy on the Volt or other cars.