SpaceX's new Falcon Heavy space rocket has launched on its maiden flight. The rocket departed from Launch Pad 39A at NASA's Kennedy Space Center in Florida, carrying a Tesla car into orbit. The launch was delayed twice due to heavy winds in the upper atmosphere, but the countdown finally began for a 3:45pm EST (2045 GMT) blastoff on Tuesday. The rocket is the brainchild of billionaire SpaceX founder Elon Musk and contains Musk's old midnight-cherry Tesla Roadster, complete with a dummy passenger called Starman. In a typical Musk flourish, the car will be blasting out David Bowie's "Space Oddity" as it leaves the atmosphere. If the demonstration launch is a success, Falcon Heavy will be the world's most powerful serviceable rocket. "It's the biggest rocket in the world by far," Musk told CNN on Monday. He had announced plans to develop the rocket in 2011. If the rocket makes it into orbit, SpaceX will attempt to land the two side boosters at Landing Zones One and Two on land at Cape