I finally found a giant snow scoop at
Beisswengers (near 694 & 35W). So relieved; I shoveled 12" of snow from our front sidewalks in less than 10 minutes. [ which was promptly drifted over an hour later. But still. ]
(It's similar to
this one. You push it along the ground collecting snow, then glide it over to where you're dumping the snow, and if you stop quickly all the snow slides out. Or you can just tilt it up to dump. It's still hard work, but you just get tired, not crippled.)