They aren't popular at all in North America, even in the cold and salty parts like Canada. I've never encountered a car that had it, new or used. I don't know w

They aren't popular at all in North America, even in the cold and salty parts like Canada. I've never encountered a car that had it, new or used. I don't know why. My perception of them is that they don't work well enough to justify the cost, but I don't know if that's true or not.