Bit of OT, but it will be interesting to see what kind of spacing we'll get, especially on well traveled Tesla routes. Right now, you will minimize total trip time with hitting superchargers something like every 50-100 miles (lots of variables...). But...most people don't want to travel like that, understandably so.
I suspect we'll end up with something more like 20-30 mile spacing (where feasible) on the real heavily traveled routes, in CA that would be bay<-->socal, bay<-->Tahoe, socal<-->Vegas, etc. Spacing that almost makes trip planner irrelevant: you just drive until you feel like stopping or you run low on juice, then you charge as long as you want and continue on as far as that charge will allow.