While we're at the subject of travelling: Here's a post about travel by cargo ship instead of using the plane. I could totally imagine travelling that way at some point - though at the moment, my personal desire to go into the US is about zero.

One of the big things about planes is that they are fast. Slow travel, though, holds its own charms. Less jetlag, for instance. Travelling overseas used to be a big thing, much bigger than in our modern, fast-paced age, where it's possible to go to about anywhere for just a few days. Maybe that will come back in our future, if more people decide to forego air travel. (Or maybe we'll get airships back. That would be a really cool thing...)