Business Tech Talk Who needs a Hyperloop? Japan’s new train travels 500km/hour and levitates. This post is from Observer Short List—an email of By Sahil Lavingia • 11/24/14 12:00am Who needs a Hyperloop? Japan’s new train travels 500km/hour and levitates. This post is from Observer Short List—an email of three favorite things from people you want to know. Sign up to receive OSL here.