We are (a couple of computer, electronics and control engineers) as a amateur/hobbyists who want to build a Mars rover (or something similar) mobile robot for fun. Our main interest is not its mechanical design but its control, comms, and software. We do not have mechanical expertise in our group, but we have good relations with very talented machine shops who can build the mechanical parts for us if we can provide detailed mechanical design (CAD files/drawings).
Now the obvious question; Do you know any open (publicly available) mechanical design documents (CAD files) to build a Mars rover ?