You can get the Source Code from http://www.chromium.org/chromium-os and set of instructions to get the ISO Image.
Then move the ISO image into a USB drive and have fun.
It takes 7 seconds to boot.
OS login is single sign-on and so then after no passwords
I hope Oracle will find some space into Google Chrome OS.
Oracle Database XE and APEX are the two best options that will be interesting for the Oracle Community to start with in Google Chrome OS.