I have used one for a few years now. Not that I speed excessively, but it has slowed me down a few times. The are not a problem in the west (BC, Washington and Oregon).
Jay
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2010 Subaru Forester XT (TSD Rally and RallyX)
"There is no dishonour in losing the race. There is only dishonour in not racing because you are afraid of losing" Garth Stein, The Art of Racing in the Rain
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