I also must note that there appears to be no seat belts, turning signals, or side-impact airbags on this particular model.  While the EPA might very well approve, I'm certain the NHTSA will have at least some issues.  And seriously, do you intend to include protective footwear with every unit?

And, while I appreciate your intended usage of Michigan quarry and timber materials to produce what might otherwise be a viable transportation option (that is, after complying with myriad government concerns) I'm not so certain that quarrying rock and harvesting timber carry with them the "zero carbon footprint" you are intending to attain.  Will there be any erosion at the mining sites?  Will you plant replacement trees for those killed to produce your vehicle?  Also, why do you hate the beavers?