@johnstrains posted:I wonder about that depressed center car with the transformer that came with the Mid-Atlantic Set. It must be one of the longest pieces of rolling stock Lionel ever made. Or maybe the longest? I have that set but it's packed away. Should get the car out and measure it.
Regarding MPC, there were two different cars that had four trucks. A xfmr car and a bridge girder car. Both of those cars are still usually pricey today. Other than passenger cars, I can't think of any car that had more distance between the trucks. And nothing with more trucks. The fast angle wheels were a huge innovation in the MPC era, especially on these cars and pass cars.