I don't see that setup as anything out of the normal skill required of human drivers. Cars change lanes from in front of you all the time, sometimes because the

I don't see that setup as anything out of the normal skill required of human drivers. Cars change lanes from in front of you all the time, sometimes because there's something stopped on the road in front of them. The test in only "rigged" in the way a unit test looking at a specific edge-case is "rigged". Yeah, it's not something that happens every day, but there's very few human driver who wouldn't have perfectly safely followed the Merc into the right hand lane and easily missed that inflatable car. Most of us would have noticed the stationary car in front of the car we were following, and quite likely had already changed lanes before the Merc did.