Basic construction techniques used on the pickup truck camper are described in my book "Electric Earth" recently published and available at:

Barnes & Noble.com - Electric Earth... a motor overheating

or at:

Amazon.com - Electric Earth...a motor overheating

The book costs $10.95 and is a good read for those interested in lightweight construction and also for those interested in why we are suddenly experiencing so many natural disasters including hurricanes, tornadoes and floods. It also deals with how to use less energy by lightening up our construction of buildings, land sea and air vehicles and includes a chapter on building islands to occupy the oceans of the world.