I imagine electric lawn mowers powered by rechargeable batteries as the thing for the future. They are absolutely much more environmentally friendly. They don't consume petroleum fuel and pollute the air in the surrounding. They also do not contribute much to noise pollution.
Neuton Chooses Duracell for Lawnmower Rechargeable Battery | Wireless News Newspaper | Find Articles at BNET
Neuton Chooses Duracell for Lawnmower Rechargeable Battery | Wireless News Newspaper | Find Articles at BNET