RE: Level 3 is one of the trunk roads...
More like a series of tubes.
I know that one of the companies that Level 3 borged some years ago boasted having it's own transit traffic infrastructure from Tokyo to London. I used to work for said company nearly twenty years ago, and we had a few 'whoopsie' moments like that. as an example:
On of the router jockeys goofed one fine day and reconfigure an access router's default route to one of the customer's connection. Fortunately, the router crashed and rebooted before he could commit the configuration, but it was still a goof. A sign was put over his desk that said "We bring the Internet TO YOU!" as punishment. :D