Are personal submarines the vehicles of the future? This week Ortega Submersible launched an all-electric sub that allows three divers to fly through the sea. In other transportation news, a Swiss pilot is testing the boundaries of solar flight by taking a sun-powered airplane to the edge of space. Public transportation is generally seen as safe and secure, but this week hackers broke into San Francisco's Muni system and demanded a $70,000 ransom. A team of automakers is planning a fast-charging electric vehicle superhighway in Europe, and Copenhagen now officially has more bicycles than cars.