Firm gives glimpse of super-speed transportation

LAS VEGAS - And off it went.
A company that hopes to zip people and cargo through tubes at hundreds of miles an hour provided a glimpse of its propulsion system for the first time Wednesday in North Las Vegas.
The seconds-long, outdoor demonstration by Hyperloop One featured what appeared to be a blip of metal gliding across a small track before disappearing into a cloud against the desert landscape.
Developers say it could whisk people from Los Angeles to San Francisco in 30 minutes and could b