https://qz.com/1297924/teslas-sale-of-parts-to-elon-musks-the-boring-company-may-be-a-clue-to-its-strategy/

What do electric cars have to do with a tunneling company? Only a few people except Elon Musk know. Tesla builds and sells electric vehicles. The Boring Company, founded by Musk in 2016, is intended to banish traffic jams with swift, cheap subterranean travel. As CEO of both companies, Musk wants both of them to transform how we move around.

One clue as to what’s happening underground is in the proxy statement (pdf) released before Tesla’s annual shareholder meeting on June 5. It reads: