Seems to me with some of the new technoligy in gas engines (i.e. variable displacement)and some of the new materials on the market (i.e. carbon fiber), that there is a lot that can be done to improve upon rv's. Lowering the overall weight and using a more efficient powerplant could offer vast improvements. As for the solar power panels that are flexible using them in an awning isn't viable the flexable solar panels that I have seen are not intended to withstant the cyclic flexing. But here's an idea for you, laminate flexible solar panels into the curvature of the sides to the roof all the way around then no matter what direction you parked you get a charge and not just in the middle of the day like the roof mounted panels.