Not too far from done though either. The main building is mostly complete and they just need to work interiors and they have already run conduits for the Supercharger cabinets and stalls. Still has at least a couple of months to go, but probably open sometime this summer.
Progress as of April 12th thanks to 247 Tesla's YouTube channel. The conduit was laid about a week prior to this and in this video it is getting covered with concrete.
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