Fuel Efficiency & Mileage

Student invents ion thruster that breaks NASA's fuel efficiency record

Your next flight could be fueled by food

Fuel economy hasn't improved in 100 years

Women care about fuel economy more than men

Americans are selling green cars and buying SUVs

Shell's Eco-marathon unveils plans for an 83-mpg car

New York Auto Show 2015: What's hot and green

Why our job commutes are growing

2 lousy reasons why fuel economy goals might change

NASA wants to build world's most efficient plane

Too good to be true? Fast electric ‘flow battery’ cars

When it comes to speed limits, how fast is too fast?