I normally wouldn't post something like this, because I don't look for it. I now work where I see a lot of trains go by, and saw some really odd train combos outside of the Aberdeen/Matawan train station. One was a diesel locomotive pulling, a passenger car and then 2 electric locomotives then like 4 cars again. That will show you how much I'm into this, I have no idea what train cars they are, no idea what models other than they were not double deck cars. I also saw something similar to that over the last month but can't remember the exact combo. For all you guys out there that study this stuff, why are there trains made up like this in the first place? What is the purpose?