Today I presented SharePoint 2010 at the Australian Office Developer Conference and needed Internet access. I finally bit the bullet and bought a wireless modem. I grabbed the Virgin mobile one from some dodgy phone shop and did a remote desktop session back to the server at the office. I am surprised to say that it worked almost seamlessly for the entire demo.
Sitting at the airport I just did a speed test and was pleased to see 1.39Mb/s upload and 4.6 Mb/s download.
I am interested to see if I get this kind of network access everywhere