We built a home out of a 20 foot shipping container for a show in Georgia. It would sleep four, a kitchen, shower and living room/dining room. It had solar PV and thermal and was totally self sufficient. It was a model built soon after the last earth quake in Haiti to show that these types of homes can be built not only for emergencies but for daily use at a very low cost.
There are more than 35 MILLION such containers which are almost new lying near a port in the USA. It will make sense to assemble such homes for emergencies instead of using conventional mobile homes with Formaldehyde.
One of my friend built a home in Arizona similar to the very first photo seen in this attachment.
http://designcrave.com/2009-06-22/10-brilliant-boxy-and-sustainable-shipping-container-homes/. This was not only large, quiet, bug fire proof, but was very elegant.