down the tubes

The NYC subway system has 469 stations and 846 miles of track.

The London Underground has 270 stations, and 250 miles of track.

But it is the oldest underground railway system in the world, 
opening way back in 1863.

wiki

Nicknamed the “Tube” for the circular tunnels, the platforms are so deep underground they were used as shelters during the WW2 bombing raids.

wiki

We just missed that one.

The system delivers 1.3 billion rides a year compared to NYC’s 1.7.

Okay, I'm goin'.

See ya.

Or tally-ho or whatever.