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So far, the Vegas Loop has opened just nine stations, five of which connect the Las Vegas Convention Center. From a sixth station, Encore, travelers can go only to the convention center. Three more stations serve Westgate, Resorts World and Fontainebleau. As it turns out, the ground below cities is not a vast, empty space. It's already full of infrastructure like sewer systems, electrical lines, gas pipelines, flood-control tunnels -- there's a reason you call 811 before you start digging around in your yard. Musk, who's no fan of regulation, holds the stance that it's better to pay for penalties than follow the rules. As a result, the Loop has been plagued by issues, including allegations of worker injuries, chemical burns and "ankle-deep" water in the tunnels.