To me this just reinforces his previous statement about a free bucket (400kwh). This is intended to cover the long distance charging, making it free for the average person. He doesn't specifically say long distance charging will be unlimited, he says superchargers solve that problem
I've been thinking about this, and I have come to believe that the analysis that I stated in my OP starting this thread may be incorrect and that you and others who have posted in this thread could be correct: what Elon said is not different from what Tesla announced in a blog post on Nov 7th at
An Update to Our Supercharging Program .
To quote Elon again: "Model 3, from the beginning we said free charging is not included in the Model 3 – free unlimited charging is not included, so, free long distance is, but not free local."
That is a transcript from the video and the punctuation was added by by Fred Lambert or someone at electrek.co, the site that I copied that quote from. How the statement is punctuated can change its meaning.
Elon's statement can certainly be interpreted to be in line with Tesla's recent announcement that, quote: "For Teslas ordered
after January 1, 2017, 400 kWh of free Supercharging credits (roughly 1,000 miles) will be included annually so that all owners can continue to enjoy free Supercharging during travel. Beyond that, there will be a small fee to Supercharge..."
Elon did not say "free unlimited long distance", he said "free long distance" and the Tesla blog post specifies that Teslas will still include "free Supercharging credits...during travel" (Is that "long distance" travel only? We don't know.).
But it is interesting that Elon's statement specifically said "not free local" whereas the blog post said nothing about "local charging", though it did state "...our intention has always been for Supercharging to enable long distance travel."
So why did Elon say "not free local" when the blog post doesn't talk about "local" charging? I don't know. But now I am more uncertain than when I started composing this post.
The only thing I am sure of is that Tesla's new Supercharging plan is designed to discourage local charging without necessarily eliminating it because local charging will still be possible it just won't be free as it has been in the past.