Looks like a cool idea, however what happens to all the water? Looks like a good way to have a very icy road in front of the driveway or a skating rink in the yard. Years with a lot of snow buildup, I'd think you'd still have to move snow on the sides of the sidewalks/driveways or you may eventually dam the water up and get it running back toward the house? Maybe it melts slow enough that the water thaws off too rather than runs? I'm thinking if it snows more than an inch or two at a time, you've still gotta move snow/slush out of the way. Hate to have the concrete heave a bit and f up the entire thing. Just bored and thinking out loud, I'm the eternal pessimist, so what can go wrong, most likely will.
