I just set up and played with the new Cargo Train Set (5258) and I have to say it's really great. The new 2.4 ghz controller works flawlessly. This is a big improvement over the last version of RC train controllers that accepted alot of interference. It runs on the same RC train track that Playmobil has used in the past and the roling stock is the same too. The lights and sound are a nice addition to the set. They definitely brought a smile to my face. There is an engine startup, running sounds and an air horn. Directional lights are a nice touch. Overall worth every penny I spent. I can't wait to run more of the locos on my layout.
I haven't taken apart the engine block on the loco yet. I'll be looking at the motor and receiver to see if multiple locos can be lashed up. I'm also not sure of how weather resisitant it is. More on that as I experiment...