Last night, super entrepreneur and Twitter addict Elon Musk posted some mesmerizing footage of the tunnel that his nearly two-year-old infrastructure company, Boring Company, is creating in Los Angeles right now, the first of four planned projects that Musk promises will reduce congestion in car-choked city cities. Musk has said previously that the system will be capable of whisking pedestrians, cyclists and private vehicles at speeds of up to 155 mph.