For those who like a physical challenge .....

Street directions by Google with an interesting twist:

Go to Google
click on “more”
click on “maps”
click on “get directions”
start in New York & end in London
scroll down to instruction number 21

Same thing happens if you try London to Paris.

Doesn't work, it wont let you do it.

It does. It says something like "Swim across the ocean to Europe" or something like that.