Columbia subject headings:
Harvard subject headings:
Biographies.
Businesspeople--South Africa--Biography.
Businesspeople--United States--Biography.
Inventors--Biography
Musk, Elon.
PayPal (Firm)
People.
SpaceX (Firm)
Technological innovations--Economic aspects
Tesla Motors.
Princeton subject headings:
Businesspeople--South Africa--Biography.
Businesspeople--United States--Biography.
Musk, Elon.
SpaceX (Firm)
Tesla Motors.