Google Developers Group
The Cr 48 was designed by Google as a test notebook for the Pilot Program Chrome OS.
Main features on this notebook is booting in 10 seconds and resuming from sleeping instantly.
The notebook is made for comfortable web browsing. So, it lacks a CAPS key, but has a Search key in its place. There are no the F keys But instead you can find browser function keys, including back/forward, refresh, full-screen, tab toggling, screen brightness adjustment, mute, volume up and down as well as the power button, which also serves as the logoff/login key.
Also, you can watch interesting video about Google Chrome OS, how it works.