A big hole in the car park at SpaceX's headquarters in Los Angeles is the first visible evidence of another of Elon Musk's ventures. Mr. Musk who, besides leading SpaceX, a rocket company, also ＿＿（6）＿＿ Tesla, a maker of electric cars, is going into the tunneling business. The goal of the Boring Company, as he dubs his new enterprise, is to ＿＿（7）＿＿ into tunnels faster and more cheaply than is possible at the moment. ＿＿（8）＿＿ the pit in the car park, Mr. Musk says he has also begun a series of test tunnels for a project that will, if it comes to ＿＿（9）＿＿ , carry cars under Los Angeles on high-speed sledges. In this way, people can ＿＿（10）＿＿ the dreadful traffic jams above. More ambitiously, he claims to have official support for a 320 km (200-mile) tunnel that would, in half an hour, whisk peopole between New York and Washington, DC, in magnetically propelled capsules, using a technology he has dubbed the hyperloop.