Elon Musk is boring ahead with his idea for an underground transportation system.
Mere months after casually tweeting an idea about digging tunnels to alleviate traffic, he’s dug a hole in the SpaceX parking lot in Hawthorne, California, and last night posted footage of the mechanism that will deliver automobiles to the underground network.
In the Instagram video, a black Tesla Model S car pulls onto a white platform and then is lowered underground. In the background lie construction materials…