[arrrg]

Yeah, that seems like an easy problem to solve, with both technology and regulation. Self-driving cars would only get certified for driving conditions they can handle, so driving below, say, 3°C or with ice or snow on the street would not be allowed if a car can’t handle ice or snow. (I assume that in the foreseeable future all self-driving cars will also have to support some sort of manual driving.) The first condition can even be enforced automatically. When self-driving cars get better those conditions can be relaxed.