The idea of an 800 mph transportation system is just the latest idea from the mind of Elon Musk.

Musk is a 42-year-old engineer who co-founded PayPal and created Space Exploration Technologies (SpaceX), a private space exploration company, and Tesla Motors, an American electric car company that produces the acclaimed Tesla S model.

Musk is also chairman of SolarCity, a company he cofounded "to help combat global warming and minimize air pollution," according to his website.

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Morning travelers make their through Hartsfield-Jackson International Airport amid the ongoing government shutdown. Monday, October 27, 2025 (Ben Hendren for the AJC)

Credit: Ben Hendren

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Public Service Commission candidate Peter Hubbard gets a hug from Brionté McCorkle, executive director of Georgia Conservation Voters, during an election-night party in Southwest Atlanta on Tuesday, Nov. 4, 2025.  (Ben Gray for the AJC)

Credit: Ben Gray for the AJC