An Emirati man passes by a poster presenting Hyperloop Dubai, The Future of Mass Transit at the Dubai Future Accelerators in Dubai, United Arab Emirates, Tuesday, Oct. 4, 2016. A competition designing a system of tubes to zip people past Dubai’s skyscraper-studded skyline near the speed of sound is more than a pipe dream for this desert sheikdom long fascinated with the future _ and with being the first ones there. (AP Photo/Kamran Jebreili)
