|SCorporate Average Fuel Economy (CAFE)
standards and high fuel prices resulted in large improvements in vehicle
efficiencies for almost 10 years in the late seventies and early eighties.
|SUltimately other factors such as the interest
in minivans, SUVs and heavier and higher performance automobiles countered
those improvements, and light-duty-vehicle efficiency actually declined for
the entire fleet. Will this change?
|SAs we look into the future, one factor that
could change the current efficiency trend is a stronger movement towards
limiting CO2 emissions. Technology
exists to improve efficiencies, but at a cost.
|SAssuming the United States decided to incur
the cost, how quickly could changes in efficiency make an appreciable impact?