As I was waiting in a left turn lane, watching cars with their blinkers on, an idea dawned on me. Tesla already has a fairly accurate time from the internet and GPS, it might not be that difficult to synchronize all Tesla blinkers in the world. It would make for some free media coverage - all Teslas in the world blink in unison. Also, in areas like Bay Area or Seattle area, it would get attention when a bunch of cars blink in unison. It may even be noticeable from space when it's dark during rush hour as Tesla gets more and more vehicles on the road.