Fuel efficiency

The national average for regular gas jumped 7 cents the past week — the 
 biggest weekly increase this year — and that's just the beginning.

The Hyundai FE Fuel Cell Concept is a strong indication that the South Korean automaker believes in a hydrogen-powered future.

AAA said Thursday that the national average for regular gas was $2.30 a 
 gallon, 1 cent higher than both a week and a month ago.

Tesla has released the 8.1 version of its software, and it includes a big 
 update that adds some semi-autonomous driving features.

Looking for some insurance against a spike in prices at the pump — or 
 just 
 want a car that pollutes less — check out these high-mpg rides.