Assume you're talking about the Menard's selection. Metal wheels, plastic trucks. Can't beat the price....
Here's an older pic. All the cars are Menard's.
Pulling power depends on what you have, engines and grades. I normally pull 20 cars per consist. My own experience is that the cars have more trouble than the engines. Most guys put their heaviest cars closest to the engine. Some add extra weight (to the cars) to keep them from derailing around curves when they are pulling many other cars behind them. I have seen engines pulling 70+ cars on a flat grade.
Jerry
