US high-tech entrepreneur Elon Musk took to Twitter on Sunday to announce the opening of the first tunnel of his high-speed underground transportation system.
Musk also added that the top speed in the test tunnel would reach 250 km/h (155 mph) and that following the opening event there would be a whole day of free rides.
In 2016, Elon Musk founded The Boring Company, an infrastructure and tunnel construction enterprise, which by 2017 filed permitting application with Los Angeles government regulators to build a tunnel from Hawthorne to Westwood.
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Aside from application as a high-speed shortcut, Musk said that the goal of the company is to make establishing a tunnel network financially feasible by enhancing tunnelling speed. He also said earlier that "getting good at digging tunnels could be really helpful for Mars."