Design Rationale: Enclosed cabin

Many of the three wheeled vehicles out there or in development have open air cabins. I plan to use this vehicle as a daily commuter when we don't have snow on the ground, so an enclosed cabin is a must. This does present a more difficult project with particular challenges regarding sourcing glass. My garage is also typically used for projects, not parking, so I don't want this thing becoming a stagnant "car pool" in the winter time.