Yeah, I agree. Just got my Model S a month ago and haven't really been paying attention for long, but the pace has seemed slower than what they need if that 2016 map is going to be for real.
Maybe the holiday season is slow? In various industries that I've been in Dec and Jan get really slow because coordinating work among various companies with varying holiday schedules and vacation time and whatnot becomes a big problem.
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Here's another thing to consider: if Tesla meets their production goals for 2020 then 5 years from now they will need roughly 10x as many chargers as they have now - assuming that chargers scales smoothly with the fleet size.
When I imagine what a 10x larger charger network looks like I find myself wondering about the split from 10x as many locations, or 10x as many chargers at a location. Will we be seeing SC locations with 100 chargers? Or might we see SC locations every 20 miles instead of every 100 miles along all the major highways?
I notice that Tesla doesn't have a 2017 map yet, which had me wondering if the strategy changes after 2016. The 2016 map seems to have all the really important stuff built out so you can more or less go anywhere in the U.S., so maybe the strategy changes to to increasing convenience and making the experience of charging more pleasant instead of just making new destinations accessible? Is there a point where a shift happens to put more emphasis on destination charging? That second one seems kind of improbable since superchargers at destinations can end up with the problem of being tempting for locals to camp out at.
Its going to be really interesting to see how the strategic buildout of the long distance charging network changes as location choice and station size is driven by things other that basic necessity.