Love him or hate him, Elon Musk is a visionary. In May 2002, he founded SpaceX, an aerospace manufacturer and space transportation services company. Then he helped begin Tesla Inc., an American automotive and energy company, before becoming its leader after the Great Recession of 2008.
More recently, he and engineers from both companies developed a new concept of transportation called the Hyperloop. In this system, people and freight are placed in pods that move quickly along a rail through a tube (or loop) above or below ground to avoid the dangers of grade crossings.