Here is a little something different and totally practical for pedal powered utility. I have been aware of this concept for some time but I keep going in several directions at once (senior moments) and losing the link. Being a front wheel drive bicycle/tricycle builder at one time is what lead me to it. At one time I had an image of one of these carrying a refrigerator and another of a bunch of drunks being ferried home after a night out but I have lost those.
I don't need one but if there was ever a reason to learn to weld this is it.
image is not me
http://drumbent.com/trike.html
http://organicengines.com/lazy-index.php
http://drumbent.com/trikedetails6.html
http://drumbent.com/trike/trikeload.AVI