This isn't just any tunnel We can get to 100, no problem, but we'll take it easy for you. It's Elon Musk's tunnel. To understand why we're speeding through it, you need to go back a couple of years when he decided he had had enough of Los Angeles traffic gridlock. Either we try something new, or we will be stuck in traffic hell for the rest of our lives. I still think it will maybe, this could be underground. This is the underground network he envisions. Electric cars using street-level elevators to drop down into a series of tunnels. Autonomous technology in the cars ensure that they don't run into each other. [MUSIC] Despite going speeds over 125 miles an hour. Tunnels are, in my view, the only solution to [UNKNOWN] congestion, because we have a 2D road network and we have buildings in 3D. And everyone wants to pile out of those buildings and into those buildings at the same time. Obviously you're going to have a traffic jam No one was building such a system so, musk formed the amusingly named boring company and started building it himself. About a year ago that company started digging what has become today's 1.2 mile long test tunnel. In Hawthorne, near Los Angeles. Unless we can make tunnel digging at least ten times cheaper, then digging tunnels will not be an effective means of alleviating traffic. It'll just cost too much. You can't go off the tracks, right? No. You cannot go off the tracks. At first glance, the tunnel is a bit daunting. It's only 12 feet in diameter So it's much more claustrophobic than most transportation tunnels. At the end of our four minute adventure, the verdict. That was scary but that was kind of cool. And by the time we started up the elevator that returned us to the surface. It'll be faster in practice, this is Just going slow because it's early days. I don't wanna go any faster than what we just did. No thank you. And when it was all over it was easier to see how this proof of concept tunnel could actually be a preview of the world to come. At this point I'm confident this can revolutionize cities and get rid of soul-destroying traffic.