I found out about the mysterious "Company X" from a New Holland company service manager who, in turn, received pictures_info from a New Holland engineer. like you, I always thought "Company X" was Claas as well. He never mentioned the actual models of combines the BiRotor was up against; - I'm thinking it might have been the TX68 conventionalsIJ The only "deal" between CAT and New Holland (that I was ever aware of) was the manufacturing of select CAT tracked-tractors at the Genesis_Versatile plant in Winnipeg, plus I believe CAT supplied logistics for New Holland parts distribution, at least at one point! I'd have to read the book again but, the way I understood it, Mark and Ralph were hoping that "Company X" would manufacture_market the combine in North America under the CAT logo, while it would be (perhaps) marketed under "Company X's" logo in Europe. We really need FarmBuddy to contribute to this thread; - he was a big part of the team that actually built and perfected the prototype. In fact, his picture is in the book (towards th end).