SpaceX is pitting teams of hopeful Hyperloop designers against each other at its headquarters this weekend, giving each team a chance to test its Hyperloop pod on a mile track at SpaceX headquarters.
The Hyperloop Pod Design Competition was first announced in 2015, and designs from more than 100 teams were first judged in early 2016. About 30 teams made the cut and were allowed to progress to the upcoming test track battle.
Several teams have already been showing off their designs.
Musk first began publicly discussing his ideas for a "hyperloop" that would blast riders from San Francisco to Los Angeles in about 35 minutes, about half of the time a flight between the two cities takes, and, of course, a fraction of the time it would take to drive there. At the time he first designed it, Musk cited his frustration with the cost and performance of a proposed high-speed rail project linking northern and southern California.
The concept resembles in appearance those pneumatic tube systems used to send messages through buildings, though Musk said in a written proposal that his Hyperloop would require more innovation than merely enlarging existing pneumatic pipeline designs.