Elon Musk's vision of a Hyperloop transport system that carries passengers in pressurised tubes at near-supersonic speeds is on track to hit a milestone.

伊隆·马斯克的超级高铁创想——加压密封车厢以近于超音速的速度运送乘客——即将见证里程碑式的新突破。

Musk outlined his futuristic idea in a paper released in 2013, challenging innovators to bring the dream to life.

Hyperloop Technologies, one of the startups that picked up the gauntlet thrown by Musk, is hosting a "sneak preview of the future of transportation technology" during a two-day event billed as involving a demonstration at a test site outside Las Vegas.

A series of tweets fired from the Twitter account @HyperloopTech teased "big announcements you don't want to miss".

Late last year, Hyperloop chief executive Rob Lloyd said in an online post that the team was working toward a "Kitty Hawk" moment in 2016.

The post came with word of an agreement to use an industrial park in the city of North Las Vegas to conduct a Propulsion Open Air Test of the blazingly-fast rail system.