The Trump administration is battling California over its strict fuel standards. Regardless of who ends up winning, automakers are likely to keep increasing fuel standards.
Automakers are deciding whether to choose stricter emissions standards set by California, or a regulatory "freeze" proposed by the Trump administration.
President Donald Trump has promised to roll back fuel efficiency rules, but there is still no firm decision. Click the audio player above to hear the full story.
Low gas prices may lessen the shine on hybrids, but that's not the only reason.
Poorer people spend much more of their income on commuting.
Facing ambitious new federal mileage standards, and higher gas prices, automakers are touting ‘fuel efficiency’ at the North American International Auto Show this week.