I'm traveling for work today, so I'm computing on the train. I still remember the old days when we didn't have any Internet access on trains. Now, I simply use my Windows Mobile smartphone to tether my tablet PC and I'm quickly online.
Soon, all the major trains, buses, and airlines will offer Wi-Fi and we will look back in a few years at the "dark ages" when we didn't have Internet access on trains and planes. Can you imagine a future where the Internet is everywhere?