Tesla boss Musk opens guard rail tunnel

Elon Musk is known far beyond Tesla for his companies and inventions. In addition to his favorite project, the space company SpaceX, he is now also involved in the solution of the local transport problem. Especially in Los Angeles, transport by car has become an enormous problem for the city. He wants to have found a solution with a novel tunnel project. Now the first test has been presented, leaving observers behind with a few questions.