Gas? LOL
There is more than one way to make an environmentally friendly lawn mower. Sure, you could strap a few mowing decks onto the rear of your bicycle, or you could replace the front wheel with a push lawn mower’s deck. This person went the more conventional route and jammed a solar panel on top of their lawn mower.
So, while they’re hard at work, the solar panels will continue to recharge the lawn mower’s batteries, giving it infinite power to mow their lawn time and time again without punching a hole in the ozone layer. We should all aspire to be like the owner of this contraption.