So, I took my 5-day old S85 out for its first big road trip - a 220 loop from Sacramento to San Jose and back - I do this at least once a week for work--if the car stumbled on this, my wife would shoot me.
I left this morning with a 270 mile range charge and rolled back into my garage this evening with 44 miles left. I did a bit of everything -- freeways, city driving, went through the Altamont Pass twice and crawled in god-awful Bay Area rush hour traffic with temps between the 80s and low 100s.
For you old hands, this might not seem like a big deal, but it was huge for me in terms of confidence in planning trips. Two things were really helpful: 1) the energy app was immensely useful in making sense of how I was doing, and 2) cruise control protected me from a happy right foot. :)
On the first outing, I was conservative and kept the cruise control at 60 (which was hard since I am usually doing 80mph on this loop) but next time I know I can go a bit faster based on how this first trip went.
Kudos to Tesla for building a car with this kind of range and providing accurate tools to help make the best use of that capacity.