A. US President Barack Obama made a significant commitment to reversing the previous president's attitude towards combating climate change earlier this week.
B. The California regulations would force automakers to reduce vehicle emission by a third by 2016, four years before new federal standards take effect.
C. The move would increase fuel efficiency by as much as eight miles per gallon.
D. If, as expected, California receives permission from the EPA to move ahead, it would mean that both US and other automakers would have to produce cars that are more fuel-efficient than current models.
E. He directed the Environmental Protection Agency (EPA) to reconsider allowing the state of California to set stricter fuel-emission standards on vehicles than federal limits.
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