Honda's hydro power

A little water power can pull about seven gas-powered cars off the road.

That's the gist of an effort by Honda to cut emissions by equipping a plant with a little hydro-electric power plant. The Japanese automaker outlined its recent efforts in a two-minute video with the tagline "every drop counts." In the video, Honda engineers talk about how capturing falling waste water using a turbine-type device can produce electricity for the vehicle factory.

Honda says this particular example will cut electricity use by 50,000 kilowatt hours a year, ultimately reducing CO2 emissions by about 70,000 pounds annually. That's about equal to the average emissions put out by seven cars in the US. Check out the Honda video below.