Tesla's Musk says new Autopilot likely would have prevented death

By Alexandria Sage and David Shepardson SAN FRANCISCO/WASHINGTON (Reuters) - Tesla Motors Co Chief Executive Elon Musk said on Sunday the automaker was updating its semi-autonomous driving system Autopilot with new limits on hands-off driving and other improvements that likely would have prevented a fatality in May. Musk said the update, which will be available within a week or two through an "over-the-air" software update, would rely foremost on radar to give Tesla's electric luxury cars a bett