Tramways Conductor's Manual, an expansion for the game Tramways and the Tramways Engineer's Workbook, comes with a 3D locomotive (approximately 4.5cm) and the rules sheet. You can play with one locomotive or more, depending how much you like your passengers to take the locomotive. You need one rail worker to catch the locomotive, and you will receive +2 happiness points compared to your the normal income. —description from the publisher