I saw this on some show about modifying inventions. Can't remember the name. It didn't work really well because the weight of your body on the wheels of the lawnmower make it extremely difficult to move forward.
Well then, I guess you'd just have to convert a bent instead
I'd guess, no matter what you'd have to have a flat lawn to use it. Push mowers are hard enough to move uphill on foot.
"Sharing the road means getting along, not getting ahead" - 1994 Washington State Driver's Guide