NORTH LAS VEGAS, Nev. -- A low-profile block of aluminum zipped across a short stretch of what looked like railroad tracks Wednesday before crashing into a tuft of sand and sending a small cloud into the clear skies of the desert north of Las Vegas.
The seconds-long demonstration by startup Hyperloop One marked the first public glimpse of a propulsion system that its creators hope will rocket people and cargo through tubes at the speed of sound in five years.
10:01 Another big Obamacare stumble: News of 2017 rate hikes come at an especially bad moment12
10:57 CMO Today: AT&T’s Ambitious Advertising Plans With Time Warner Deal32
10:34 The villagers living under Heathrow's death sentence15
21:16 Tesla, rivals joust over how to put self-driving cars on the road1