Start HUB + RailRoad

My starting hub with a railroad. Of course, the priority was compactness and +/- beauty.

P.S. Central workshops can rebuild parts either on rails or by manipulation. A full load of parts requires six factories. But if you're not in a rush, four or five will suffice. Spare parts are the top priority. You can also install a parts regulator between car parts and research packages, with priority in the direction you need.