Citing the growing potential of autonomous drones, Elon Musk has criticised the Pentagon’s $1.8 trillion F-35 programme, calling it outdated. File Image/Reuters Elon Musk, the billionaire entrepreneur and CEO of Tesla and SpaceX, has called for a shift away from manned fighter jets in favour of autonomous drones. Sharing a video of synchronised drone swarms flying in complex formations, Musk …