When you consider just how much of a part technology has played over the last century, it is an amazing time within which we live.
Check this latest story: https://www.bbc.co.uk/news/technology-54838982
Now imagine such a tunnel not just across the US, or Russia, or any other similarly huge country. Imagine it crossing the oceans – above would be safer of course – and you then have Harry Harrisons’ A Transatlantic Tunnel, Hurrah right before your eyes.
I love technology.