Comment Well, if you really have to code on the bus... (Score 1) 99
Didn't tethering fees get clobbered by the FCC? The IDE is pretty light on bandwidth, the initial pageload is about 2 MB and it's just shuffling text around during use. It has a keep-alive ping, but otherwise you're only going to use bandwidth while saving changes or using the terminal. How much bandwidth does a terminal use? I recently signed up with PTel, which uses T-mobile's towers and gives you unlimited 3g / 1 GB 4g for $35/mo, no contract. I think a month's worth of coding would run substantially under 1 GB of bandwidth but I don't really have the time to do a rigorous test.
I found interpreters for Python and Brainfuck on the Chrome Store, and of course you have a JS interpreter, and any interpreters written in JS should probably work. There are rather a large number of those for some reason. There's some sort of git app too, FWIW. Beyond that there are a few Android apps that will run natively on ChromeOS without any fussing, and most Android apps can be made to run with minimal effort.
I don't know what you're coding in, but unless it's fairly obscure I'd say it's possible to code and test, offline, using a Chromebook. Either way I hope no one is twisting your arm to get you to buy one.