Any scrap polycarbonate?

I am working on a project to convert an RC car into a likeness of the Mach 5. I was wondering if anyone has any scrap polycarbonate I could use for the clear dome at the top of the car.

http://vignette2.wikia.nocookie.net/speedracer/images/f/fe/Mach5_buttond.jpg/revision/latest?cb=20080415155934