Not long after the May 25 announcement that Ford customers would be gaining access to Tesla's supercharging network came more big news: General Motors is now doing the same thing. The announcement that and would be teaming up came during a June 8 Twitter Spaces conversation between each company's respective CEOs -- Elon Musk and Mary Barra. Despite the magnitude of the arrangement, Deepwater Management analyst Gene Munster thinks the move helps out the competition more than it helps out Tesla.