Well...this thing has me tottaly hooked must find me a way to make it as cheap as possible. I did some searching and I see a lot of people build stuff like this by themselves. As I am a tottaly ignorant person and people around here seem to have tons of answers, some simple questions first, so I can direct me into searching: Is this a projection screen or a video screen? What could be the material of the screen (not the frame, I understand frame can be anything solid). If it is projection screen, how come you are not getting in projectors's way while driving? How can someone calculate dimentions and curvature of this thing? P.S. please forum modderators, let this thread stay a bit here till you send it into the darkness of Hardware subforum!