You may have seen ads for so-called fuel-saving devices that make outrageous claims about their effectiveness. But are there any that actually work? Get the facts about fuel-saving devices in these articles.
A flex engine sounds like some sort of futuristic motor, but you'd be surprised how long this technology's been around. Is it greener or more efficient than a gas-guzzling engine? Flex your brain muscle and find out.
By 2025, the Obama administration would like to see the average vehicle rated at 54.5 mpg, or 37 mpg on a window sticker. Considering that the industry has made just over 2 percent gains a year since 2007, this is no small feat.
Instead of burning fuel like conventional engines, hydrogen fuel cells work through an electrochemical process. To produce electricity, hydrogen atoms are ionized on one side of an electrolyte membrane. How much do you know about hydrogen fuel cells?
Natural gas generators, as the name suggests, use natural gas -- which includes the propane used for backyard grills or the methane that utilities supply through underground lines -- to generate electricity.