Not long ago, billionaire Elon Musk had a vision of the future. He dreamed of a supersonic transit system. Soon after, he released a 57-page document on a concept called Hyperloop. Hyperloop is a huge supersonic transit system that travels in between cities filled with traffic. The sponsor of Tesla motors and SpaceX dreamed of a friction-less, low-pressure, vacuum-sealed pod. Powered with energy from solar panels, it should be able to withstand major natural disasters. Elon believed this pod would shorten travel times drastically. For example, the distance from San Francisco to Los Angeles takes 6 hours. This pod could get there in 35 minutes.

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