Yes, it is.
That's one of the things we're testing. If you think about a human on a country road where there are no markers, how do we judge where we are if we're in the middle of a snowstorm? We're probably looking at tree lines, hydro poles, ditches, etc. We have to teach the machines, the computers in the car, to think a bit like we do, and as we were talking about earlier, act in a safer fashion.
These are basic problems. If you look at the DMV in California and the number of disengagements in autonomous cars, guess what? Most of them have to do simply with rain. When it starts to rain, the sensors start to fail.
We've learned here, for instance, in Ottawa, because we have interesting weather at times—which is great for testing, by the way—that LIDAR is not very good in the snow or the rain or when there's slush on your bumper, whereas radar is. We've learned that yellow lines on the road are much better than white lines. Just by what I'm sharing here, you can see this is the kind of learning and testing that we're doing.