Before v39.5, the world of Knox Country was a series of static fortresses. Survival meant finding a house, barricading it, and staying put. The introduction of vehicles in this era shattered that stagnation. By adding cars, The Indie Stone didn't just add a faster way to travel; they introduced a complex sub-system of mechanics: The Engine Lifecycle
If you want to play multiplayer with friends for 100+ hours, v395 is objectively superior . If you want to test new blacksmithing mechanics alone and don't mind crashes, play Build 42. project zomboid v395