Actually work. it is scalable, and we have a demonstration tunnel here and we expect to expand this over time to many cities all around the world. and give people more time for their friends and family. >> for those who got a chance to go on the trip through the tunnel they say the ride was bumpy. musk warned of that yesterday before those rides but vows to have the path as smooth as glass once it's finished. the initial tunnel costs $10 million and not the price of the tunneling machine, research and development. took 18 months to build and musk has similar projects developing in chicago and ...