It is look like that unusual combinations of hardware and software will not cease. Just such a combination is MacBook Air with Chrome OS on it. The author of this project is Hexxeh who early was trying to run Chrome OS on iPad or exactly Chromium OS (an open source Chrome OS). MacBook Air actually works quite effectively with the operation system of Google and only Bluetooth connection doesn’t work. But if you want to try how it works or you just like to tinker your laptop you can see how to do it on Haxxeh’s blog: http://hexxeh.net/?p=328117760 , also you must know that there is no option for dual-boot, you can use only one operating system.