sorry to any hot air balloon purists, not going to start a separate airship thread
there are several airship (zeppelin) companies that popped up roundabout the recent skyrocketing fuel prices, trying to develop airships as an alternative to using pricey jet fuel.
It would be a lot slower, but can you imagine spending 3 (?) days crossing the Atlantic? I think it would be amazing, I imagine it kind of like a ferry, with common rooms and a bunch of sleeping pods/bunks, and prices similar to the bus.
as far as freight goes, this is very interesting:
http://en.wikipedia.org/wiki/SkyHook_JHL-40