Now this is what I call an imaginative family holiday. It comes with the ultimate in classy holiday videos - complete with sophisticated graphics to explain financial points.
Bill and Melinda Gates took "the kids" down the Panama Canal.
Bill had read a history of the Canal before they arrived. And as you can see here, he was allowed to operate the "Windows-based computers" that open the locks.
I'm just sorry the video didn't make use of the palindrome, which would have fitted nicely:
A man, a plan, a canal, Panama