Elon Musk said on Twitter that he received “verbal government approval” to build an underground Hyperloop transit network connecting New York, Philadelphia, Baltimore and Washington DC, with stops connecting each city center, and a dozen more entry or exit elevators located within each city. The project would be run through The Boring Company, Musk’s tunneling venture, which has already begun test digging near SpaceX HQ in California.

Source: Elon Musk says he has ‘verbal’ okay to build multi-state underground Hyperloop | TechCrunch