It's not science fiction, it's just drilling holes in the ground vs waiting for flying cars. It may be expensive - but you only have to build each tunnel once.

It's not science fiction, it's just drilling holes in the ground vs waiting for flying cars. It may be expensive - but you only have to build each tunnel once. There's a startup that got some hype recently for flying an electric airplane between London and Paris - when as someone commented on the HN story [0] you can just take the Eurostar through the tunnel - which is electric and takes just as long and doesn't cost any more. [0]: https://news.ycombinator.com/item?id=13930880 https://news.ycombinator.com/item?id=13930880