In a disappointing but not wholly unexpected twist, Elon Musk has admitted that his Hyperloop -- a proposed mode of transport that will get passengers from LA to San Francisco in 30 minutes, traveling close to the speed of sound -- is "extremely speculative." Furthermore, Musk also says that he doesn't intend to build the Hyperloop himself -- rather, he will publicly share his plans on August 12, and then let other people build it.