This happened to me last Friday. I got in the vehicle after work, put the car in reverse, and was a bit frustrated to experience significant glitching on the screen (no back-up cameras, the left portion of the screen didn't show that I was in reverse, etc). I thought, "oh well, it'll get itself sorted out in a few seconds", and left.
Drove out of the parking lot and onto a main road, then more random on screen glitching, the stereo streaming and sound stops, and it subsequently locks up. I was anxious at that point, as I was getting on the toll road and preparing to do highway speeds.
But...off I went, as the car continued to drive nominally the whole time. Then the screen went totally blank and rebooted. I was worried at that point, but it rebooted fine.
Unfortunately, it continued to glitch all the way home, and I never did get the stereo working or on screen display animations (traffic/Nav/etc) to catch up to real time. Blinkers didn't work like they should..
It had been raining for a couple of days here.. Not sure if that had anything to do with it or not, but I got in the car the next day (in my garage) and everything worked fine again.