We got one of these gadgets from The Lakeside Collection and it broke on the first use. It turns out the screw neck is made of the cheapest plastic known to man and is doomed to failure upon contact with anything harder than snow, such as ice, wipers, mirrors, roofracks, antennas, and so on.
Worse, for the few minutes it was working, it was conspicuously less effective than a brush.
So I'm going to just get a decent, big-ass brush. I'm going to give the Hopkins Snowbroom [Amazon] a try because it's slightly more expensive than everything else, looks sturdy, has great reviews, and because I don't want to be the type of person who ends up buying three different snow-removing gadgets.