This is a model of the largest rail tanker, the GATX 96500, in N scale. The non-prototypical articulation allows it to navigate tighter turns than would normally be possible for a car of this length.
The prototype is in a museum:
https://www.facebook.com/media/set/?set=a.10150914428586021.410033.168145031020&type=3
gatx_95_ft_tank_car.scad | 10.1KB | |
gatx_95_ft_tank_car.stl | 7.8MB | |
gatx_95_ft_tank_car_belly_plug.stl | 209.8KB | |
gatx_95_ft_tank_car_truck_platform.stl | 556.0KB | |
gatx_95_ft_tank_car_truck_platform_pin.stl | 208.8KB | |
gatx_95_ft_tank_car_truck_platform_railing.stl | 21.8KB | |
jshapes.scad | 2.6KB | |
ngauge_truck_pin_intermountain.stl | 240.7KB |