I've driven Seattle to San Diego and back. At the time I went, it was a bit of a pain because 70A chargers were only SF and South, so I had to use slower campground outlets North of that. Now there is a chain of 70A chargers from Canada to Mexico. Actually I guess there is still a gap in Oregon, but they expect to have it installed in a week or so.
Did this charger go in? Surprised not to have heard about it yet if it has. If the chain has been completed, that must be worth a celebratory beer or two...