"...five ChromeOS portables are five caches for the same cloud-based user and application data..." I think this is the real killer-app here: having all of your

"...five ChromeOS portables are five caches for the same cloud-based user and application data..." I think this is the real killer-app here: having all of your data (documents, pictures, music, movies, etc.) in ONE place accessible from ALL your devices, and impervious to failure of those devices.