Hyperloop technology hit the spotlight after Tesla and Space X boss Elon Musk outlined its potential in a 2013 proposal for a transport system to deliver passengers from Los Angeles to San Francisco in 35 minutes. Musk argued it would be cheaper and safer than the current high-speed rail link being built in California. The transport pods would carry passengers or vehicles through low-pressure tubes at a speed of 760mph (1,220kph). Musk envisaged "air bearings" to keep the pods suspended at high speeds and deployable wheels for low speeds. Some have doubted Musk's estimates that a San Francisco to Los Angeles Hyperloop would cost under $6bn. Countering skeptics, Hyperloop One's CEO Rob Lloyd said the "Hyperloop is real" and that the firm will "reduce its cost of the Hyperloop until it is two-thirds the cost of a high-speed rail system", the Wall Street Journal reported. Co-founders of Hyperloop One include Uber investor Shervin Pishevar and former SpaceX engineer Brogan BamBrogan. The firm also announced the Hyperloop One Global Challenge to find potential locations around the world to build early Hyperloop networks. "The Hyperloop One Global Challenge is not an engineering competition: we bring the technology, you tell us how it should be used in your location," the competition page reads. Hyperloop One is working with partners in Sweden to scope the potential for a Hyperloop link between Finland's and Sweden's respective capitals, Helsinki and Stockholm. It also announced cargo-focused partnerships in Switzerland and LA. Submissions close on September 15 and winners will be announced in March 2017. Read more about Hyperloop