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I've beaucoup articles about how advanced and wonderful autonomous drone cars are. How they're the answer to traffic, pollution, fuel economy and diaper rash. One thing I haven't seen is a real world test someplace other than Las Vegas or Los Angeles. You know, places where it rains so hard you can barely see the road, snowless days are rarer than an honest politician, and freezing road spray is the norm from November to April. I have a car that has adaptive cruise control and anti-collision sensors and if any of the above conditions occur, the systems crap out. I can't believe Tesla, Cadillac and others have found a way to overcome the weather.