When it comes to autonomous vehicles, there’s a lot of focus on American electric vehicle manufacturer Tesla at the moment. But I want you to cast your net a little wider, and divert your attention to the high seas for just a moment. Out in the Atlantic Ocean’s choppy waters, an autonomous underwater drone has just completed a circumnavigation completely unaided by humans. The Slocum G2 Glider, named Slibo, took over four years, 1,273 days to be exact, to complete its journey. [Read: There’s yet another proposal for an EV charger emoji] It undertook the journey in four legs. In 2016, after…

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