Had a trip over the past couple of days where I used the Nav for the first time. At the same time, I also used the Navigation via Google Maps on my phone. I thought that it was unusual that the phone Nav would give me a shorter route than the car. As I followed it , I figured that the car nav would soon match, but it never did until the route was fairly obvious. Does Tesla use its own algorithm for setting routes? Currently, there isn't a way to change any options for the Nav, right ?