Elon Musk is a South African-born American entrepreneur and businessman, best known for his involvement in Tesla, SpaceX, and X (formerly Twitter). He is the CEO and product architect of Tesla, which focuses on electric vehicles and sustainable energy solutions. At SpaceX, he is the founder, CEO, and chief engineer, leading the development of rockets and spacecraft. He also founded The Boring Company and is a co-founder of Neuralink and OpenAI.