How could our most-advanced-cars-ever manage to use Google maps for the maps appearance, but NOT use Google Maps's outstanding navigation to actually calculate a route and advise traffic? For this morning's commute, I had my phone running Google Maps side-by-side with the P85D's built in nav. The comparison was revealing: the built-in nav consistently made bad choices, even when both systems seemed to be aware of the same traffic, while Google Maps on my iPhone never made an obvious bad recommendation. It was almost comical because both apps displayed the same maps with the same appearance and same traffic coloring, but one app seemed like it was using a 5-year-old to do that actual routing. Overall the built-in nav routes would have added more than 25% time to my commute, until I was about 50% done with the commute and only then did the built-in system converge on the Google Maps solution. I've been driving this commute for 15 years, so I'm pretty sure I know the optimal Monday morning winter season commute route, and it is virtually identical to the Google Maps route. As a bonus, the current Google Maps system gives you real-time-updated alternative route choices all along your route, showing how many minutes faster or slower each alternative route is, and allows you to switch routes simply by clicking on these "4 min faster" (for example) buttons. Tesla: please consider changing to Google Maps not just for the shell appearance of the nav app, but for the actual navigation too. Thank you!