“In the end, the first public viewing of Musk’s latest visionary project – an underground ‘loop’ track that promises to revolutionize transport in the 21st-century city – turned out to be a grand mixture of imaginative futurism and showbiz razzmatazz, not to mention a showcase for a novel tunnel-boring technology that may be the most significant development of all.” Among other things, Elon Musk is one of the greatest marketers of his generation. Case in point: We’re all talking about a tunnel.

+ The Verge: I Took a Ride Through Elon Musk’s New Tunnel In California.