If you think that modern tools are always better than their predecessors, witness just how much faster a lawn can be reduced to nothing at the hands of a strong man wielding a scythe versus a guy with a modern weed whacker. More here.
The Raven MPV 7100S is a hybrid multipurpose vehicle. It can go up to 17mph and tow up to 550lb. loads. Attach the mowing deck and it turns into a lawnmower. It also has an on-board 7100W generator powered by a 420cc engine.
This concept for a robotic lawnmower would allow users to program in custom graphics on its touchscreen interface, then uses special cutters to create designs in your grass. Advertisers would go nuts for these at sporting venues.