"The result is that the tunnel would have negative value to the region. As a transportation service based on how Musk wishes to construct and operate it, it has practically no value. But in the event of upzoning in West Los Angeles, the tunnel would complicate any possibility of rail under Sunset connecting Hollywood with Downtown. Metro may even need to acquire and demolish Musk's tunnel, or else dig under the tunnel, which would complicate intermediate stations in Silver Lake and Echo Park."