This would be fun to travel in:

dezeen » Blog Archive » Strato Cruiser airship concept by Tino Schaedler and Michael J Brown (http://www.dezeen.com/2007/10/08/strato-cruiser-airship-concept-by-tino-schaedler-and-michael-j-brown/)

I'm not afraid of heights or anything...But that glass floor would freak me out.

That is the coolest idea I have seen in awhile.