Ex-NASA Man Squeezes Cloud Onto USB Stick | Wired Enterprise | Wired.com
http://www.wired.com/wiredenterprise/2011/09/piston-cloud-computing
Yes, you can fit a cloud on a USB stick.
Founded by several of the brains who conceived OpenStack – the open source software platform for building Amazon-like “infrastructure clouds” – San Francisco startup Piston Cloud Computing has squeezed the platform onto a memory stick in an effort to streamline the creation of such clouds behind the firewall.