A fun idea for every map. I often see these cars or trucks that go on roads, go on rails with the special attachment. Or there are specific personell carriers made for that route. I saw many vehicles already on the route that could be used for this purpouse but need improvements with the model quality. Plenty of scenarios or odd jobs to do with them as well, it's all a matter of finding them right ones. There's also Permaquip Personnel Carrier two! Railway Motors, Personell carriers is a good opportunity to flex your muscles as a developer to show off the small details and all the eye candy of the vehicle as they are small and basic but have room for complexity.