I don't think John M is confusing the MTH premier with the scale Lionel Auto Carriers. The Lionel Carriers are even longer at 24".
MTH info:
- 1:48 Scale Dimensions
- O Scale Kadee Compatible Coupler Mounting Pads
- Unit Measures:20 1/8" x 2 5/8" x 5 1/16"
- Operates On O-54 Curves