Electronically melt snow

The news is talking about how this blizzard is shutting down the roads, and I wonder about an electronic method for deleting the ice. Imagine teabags full of dry magnesium chloride flakes or pellets, blown around a caged box. Each teabag would by sized too big to pass through the caged grating, and also contain a magnet of specific polarity. The idea is to keep the particles in motion and fan blow the teabags around this caging, thus creating a 12 foot wall that passes through the airwaves and is driven through the streets, so that as the salt passes through the air at random, a wide range of area is dispersed with the chemical salt like a large melting blanket. The unit would affix to a snow plow, (possibly behind the plow) and as it passes through the air, would best disperse the salt. I realize that salt prevents ice from freezing, and it doesn't magically melt snow. My idea is to better mix-in the ratio of particle coverage, as well as speculate aloud in hopes of inspiring a potential solution.