That's very admirable. We wholeheartedly agree with that recommendation, because humans by definition are unpredictable. You're absolutely right. The reality is that it will be a mixed fleet, as we discussed earlier.
With regard to what John was saying earlier, the testing we do in inclement weather with all of the sensors is not so much to handle when things are going well but to handle when things are unpredictable and things aren't going well. It's to handle things we haven't foreseen and to find out how we can react to that intelligently. Can cars communicate to each other? John mentioned artificial intelligence, so we wholeheartedly agree.
Part of what we do with the sensors is to deal with obstacles that are not predicted and whatnot. That's one of the other reasons that we have a long way to go before we get to level 5. One of the things we tend to say is that there are connected cars, there are automated cars, and then there are autonomous cars. We tend to jump from connected to autonomous, but there's automated, which is a major step. You're seeing that already with a lot of automated features in the cars. The cars are getting safer, and those are all building blocks on the way to autonomous cars.