Waiting for the middle class to change their 'fuelish ways' may take too long. People will not stop driving cars until they have no money. Then it will be too late to buy an expensive cycle truck, because the environment will be out of control by that time. If you want people to use these machines, you have to make them cheap enough for the people that need them now.
I want several people in every town to build them out of recycled bikes, it is going to take a war time effort to get ready for a world with out oil. If I could sell my paintings I would buy more tools and materials to build more bikes, and give them away to people that need them now.