Elon Reeve Musk (/ˈiːlɒn ˈmʌsk/; born June 28, 1971) is a South-African–born, Canadian-American entrepreneur, engineer, inventor and investor.[7][8][9][10][11] He is the CEO and CTO of SpaceX, CEO and chief product architect of Tesla Motors, and chairman of SolarCity. He is the founder of SpaceX and a cofounder of PayPal,[12] Tesla Motors, and Zip2.[13][14][15][16] He has also envisioned a conceptual high-speed transportation system known as the Hyperloop.