Assertion: spacecraft's system | /r/HasProperty | the hyperloop
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text: Dissatisfied with the projected cost ($68 billion) of a high-speed rail system in California, Musk in 2013 proposed an alternate faster system, the Hyperloop, a pneumatic tube in which a pod carrying 28 passengers would travel the 350 miles (560 km) between Los Angeles and San Francisco in 35 minutes at a top speed of 760 miles (1,220 km) per hour, nearly the speed of sound.