Elon Musk is a visionary entrepreneur who has founded multiple companies focused on renewable energy, space exploration, and transportation. As a young man, he started his first company Zip2 at age 24 and later co-founded PayPal. He invested $70 million in Tesla Motors in 2004 and led them to success producing the first Tesla Roadster in 2008. Musk also founded SpaceX with the goal of making space travel affordable and advancing colonization of Mars. While some of his companies' early projects failed, such as Falcon 1 rockets, Musk persevered through setbacks with an ambitious vision that has helped transform multiple industries.