As ive done a few for Boughton raceway, if anyone else would like a panorama of their track done feel free to email me the photos and i will stitch them together.
See this thread for some of the Boughton track
Panoramas halfway down page 1 and 3.
Ideally the photos should be shot from the same spot, overlapping 30-50%, and with 30% extra on the sides top and bottom.
Alex