I am really late on this, but Metro has rolled out Wi-Fi to more buses in the Seattle Area. The 255, 644, 197 and selected trips on the 952 have Wi-Fi. Sound Transit has Wi-Fi on the selected 545 and the Everett-Seattle Sounder Commuter rail. The 545 is my route so I am really happy about the service.
Metro has teamed up with Sprint Cellular and Junxion, Inc., a Seattle-based mobile connection provider, to offer Wi-Fi service on 48 buses serving the four transit routes. (Wi-Fi service on the Route 952 will be limited to the last trip in the morning and afternoon.) The Junxion boxes have been outfitted with a cellular air card allowing passengers to use their laptop computers or Wi-Fi-enabled devices to access the Internet.
The Wi-Fi is basically like mobile phone wi-fi, so it switches towers as you travel. This works fine for surfing the web or checking email, because these protocols are stateless, meaning the data is transmitted and the connection is terminated. It doesn’t work as well for something that requires a persistant connection, such as remote desktop or ssh, but you’re on the bus what can you expect! And only geeks like me use those things anyway.
Good work Metro and Sound Transit, Wi-Fi is great and I wish you would roll it out to every bus.