Well, the ad says he's learned by trial and error, so maybe the plow is one of the errors. He claims to have 1,995 of the lawnmowers out there.
The vids I found of other lawnmower bikes don't look too convincing though.
This plow looks good for a bike path.
But thetrailduster is on to something with the trike/quad pedalplows.
I'm surprised the trike works, too. They are usually one wheel drive in the back. Try riding up a hill with wet grass gets you spinning backwards down the hill.
I bet that Rubbermaid box is full of something heavy just for that reason. You could conceiveably get a lot more umph out of a rig like that and either push heavier snow or push a bigger plow through fluffy stuff.
My desktop background is a slideshow of all of my biking pictures which includes a lot of winter shots...And I'm pretty glad it is summer! As much as I enjoy my winter commutes across the lake and trails.
I'm definitely thinking about it. I did a chainring swap on my winter crankset yesterday, and rewraped the dropbars that I'm plan on using. The parts won't actually get swapped on for another month and a half (or maybe even 2) though.