New federal big-rig standards promise to cut emissions by 25%, save owners $170 billion

Kenworth big rig (photo by Raymond Clarke Images via Flickr)There’s been plenty of talk about the Environmental Protection Agency and its ambitious fuel economy goals for 2025. But those standards only apply to light-duty passenger cars, trucks, and SUVs: what about tractor trailers and other heavy-duty vehicles, which use billions of gallons of gasoline and emit 20 percent of transportation-related…
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