The Fisker Karma is one of the hottest plug-in hybrid cars ever built. However, production stopped in 2012 when the company went bankrupt. Now the car is set to be reborn as the Karma Revero this year. Meanwhile, Ford is planning to launch a 200-mile electric car to take on the Tesla Model 3 and the Chevy Bolt. In other news, SpaceX announced plans to send its Red Dragon spacecraft to mars in 2018, while NASA invested $67 million to develop super efficient solar-electric engines. The US Air Force smashed the world record for maglev speed by propelling a floating sled to 633 miles per hour. And the Twicycle is a crazy bike that's powered by your arms and legs.