Elon Musk Revives His Dream of a Large-Scale, High-Speed Hyperloop

When Elon Musk published his white paper in 2013 outlining a high-speed transportation system he dubbed the Hyperloop, it called for tunnel-based travel over hundreds of miles. By the time his Boring Co. debuted its first commercial project last year, the so-called Loop had scaled down to a considerably less ambitious network of Tesla Inc. cars driving through a one-lane tunnel under Las Vegas.

Now, even as he flickers through an array of distractions that suddenly includes owning Twitter Inc., Musk is seeking to revive his earlier dream. “In coming years, Boring Co will attempt to build a working Hyperloop,” Musk tweeted on Sunday. The company elaborated in a tweet Monday saying full-scale testing will begin this year.