I bet one of the key factors for this thing to be on the road safely was the development of some kind of unbreakable glass for the huge front window, so they "had to" make this new type of resistant glass. Some "yes man" at the upper management level must've decided to skip constrained material testing (Glass dissipates energy much differently when it is in a frame rather than just loose... pay close attention at the ball drop demo and you'll see the glass jump a few inches)