The video is a demonstration of a reel mower system designed to cut tall weeds. It's meant to offer a complete eco-friendly package for all the green enthusiasts out there as far as lawn mowing is concerned. The unit can cut down weeds up to three feet (90 centimeters) tall using nothing but human energy. Well, most people won't leave their lawns to get that bushy anyways. Basically it can cut down those tall pesky weeds that manual reel mowers can't. So there's really no more excuse to not chuck that lousy gas mower tucked away at the back of your garage.