Train ticket London-New York

[Fonz]

"But supersonic speeds require another critical step: eliminating the air -- and therefore air friction -- from the train's path. A vacuum would also save the tunnel from the destructive effects of a sonic boom, which, unchecked, could potentially rip the tunnel apart"

I'm glad that's taken care of ... so if there's a crack in the train we'll all get sucked out through a 1 milimeter hole |conehead|