THis thread is in conjunction with a previous thread about designing a bicycle that aids in the transportation of objects that can not currently fit on a conventional bicycle. what do you want for the ultimate cargo bike? A trailer? Simple lightweight racks? A Cycle Truck?
Here is a survey that might prompt ideas: http://www.quibblo.com/quiz/bIB8LuY/Cargo-bicycle
earlier thread: Cargo bike design project