Had the same idea :-). To revive freight tunnels. With the advancements in self driving tech and tunneling tech this would seem feasible. Amazon could finance

Had the same idea :-). To revive freight tunnels. With the advancements in self driving tech and tunneling tech this would seem feasible. Amazon could finance them and then rent capacity it out to other companies. A pilot perhaps in Chicago by reviving the old freights tunnels - https://goo.gl/ErJQFx https://goo.gl/ErJQFx The Swiss were/are considering them too - https://goo.gl/PNMRrE https://goo.gl/PNMRrE