Senate panel probing VW's use of tax credits

The Senate Finance Committee opened a probe Tuesday into Volkswagen's use of a federal tax credit intended for fuel-efficient cars as the company's emissions-rigging scandal widened.

EPA sets tougher auto fuel, emissions standards

The U.S. Environmental Protection Agency on Monday announced new fuel and emissions standards that should significantly lower the levels of pollutants that cars and trucks spew into the air, the agency said.

Obama calls for new truck fuel standards

US President Barack Obama on Tuesday ordered officials to start setting new fuel efficiency standards for medium and heavy trucks, wielding his executive power in the fight against climate change.

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