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//I do have to give it a fish - - - it provides no solution to the problem of spraying a highly corrosive element on my car and everyone else's//
So, I propose periodic stretches of pipeline that shoot water out of the roadway at a reasonable velocity to wash off the grit from under the
car. They would be heated, but just enough to resist freezing. They could also be triggered by weight sensors in the road, fifty feet ahead, to reduce water consumption. Would be activated on icy days.
Collective road gritting
"Sprayjets" idea complements the idea in the link. Of course, Sprayjets are also useful without collective gritting. [WordUp, Oct 21 2004]
||I would not recommend trying this in a place that reaches minus forty. Heck, even minus ten with a wind chill. It's all well and good to have the water heated as it leaves the nozzles but what happens to it after?
||Big bone I'm afraid, I ride a bike and wouldn't take kindly to being sprayed with water in sub-zero temperatures.
||Maybe if you had it as a slip road so people could occasionally choose to drive though, then you could call it a car wash.