The 2011 Zombie Safe House Competition had users submit their own ideas of a truly safe refuge from the undead menace, and the winning entry is a unique, if simple-sounding, idea. You too could do the same with the portable safe house, dubbed Vagabond by its designer, Austin Fleming. The outer layer of the Vagabond shell is reflective and made of solar cells. A tube with what appears to be a turbine called a "tornado" circulates fresh air so one doesn't suffocate inside their little, domed safe house. The biggest flaw, though, might be how little it protects against other survivors. While zombies may eventually pass you up, less ethical survivors might view Vagabond domes as an easy source of supplies at your expense.
http://techandle.com/2012/09/04/ultimate-portable-zombie-safe-house/