A little house set on a shopping cart frame containing a
Rocket Mass heater, with a loft space for a king-sized bed and towed by a bicyclist -just is not going to happen !
I have posted about reasonable expectations in Little house builds here at Permies.com, but this article says it better than I can !
Link below :
http://www.treehugger.com/tiny-houses/think-about-safety-when-you-build-tiny-houses.html
For the good of the Craft ! Big AL