Talk:Truck
You may want to consider a design roughly based upon Sir Torquil Norman's Global Vehicle, the Ox.
inhabitat.com/the-worlds-first-flat-pack-truck-can-be-assembled-in-just-12-hours/flat-pack-truck-2/
The main advantage to low tech DYI is that the only bends are simple edges.
Perhaps he would release the design to open source as he appears to have no interest in profit.