That's great and all, but I'm still confused why I would want one over a traditional laptop (or ultrabook) with OS X, Windows, or Linux unless it's purely to save money on a less expensive Chromebook model.
For $199 I have a computer that runs 10hrs on battery and does everything I need in the simplest way possible -- far simpler than the competition, that's for sure.
The question I have is why would I want a traditional laptop over this? They offer extra features I just don't need at the cost of complexity, maintenance, battery life, and price.
BTW, if personal Internet ever went down, there's a model that has a cellular modem or you can tether from your smartphone with mobile hotspot.
If you need to use traditional Windows applications frequently then maybe a native Wkndows device would be more useful. Although I gather that it's technically possible to install Windows 8 on a Chromebook.