As Musk observes, though, the technology is the easy part... it's the legal clearance that's hard. The Boring Company will need extensive permits if it's going to create a whole grid of high-speed tunnel transports underneath LA, and it'll be no mean feat to convince officials that such an ambitious project should go ahead. Still, this is a start. And when LA is both highly dependent on cars and infamous for its traffic, the city might be receptive to some audacious ideas.

Promising conversations with @MayorOfLA regarding tunnel network that would carry cars, bikes & pedestrians. Permits harder than technology. https://t.co/0dxrXBOOWy — Elon Musk (@elonmusk) June 18, 2017