The result. Amazingly cool. See for yourself.
The install was straightforward if you have the micro HDMI adapters. The Lapdock's USB port powers the Chromecast. Booting is pretty instantaneous. The Lapdock had no issues recognizing the HDMI video feed from the Chromecast.
Volia, a portable 11" streaming video monitor with 10 hour battery life. I now have something to put in my shed and garage when I need to watch Youtube video tutorials!
Google Chromecast + Motorola Lapdock = Geeky cool!