Jaguar’s getting back into open-wheel racing, and doing it without gasoline. Later next year, the venerable British automaker will compete in the third season of the all-electric Formula E racing series. It’s funny to see a brand once famed for abysmal electrical systems embracing battery-powered racing, but there are two good reasons for the move. First, it gives Jag a platform to develop and test EV tech. Second, it’s great marketing fodder. Motorsports has long…