What's is this set?

I've been searching the Internet for more info on this set (thank you Super for the two links), but I haven't found very much other than it was a ToysRus exclusive, and is listed as, and is called: "Takara Tomy Plarail EF81 DD51 Connecting sleeper car set" other sites listed it with: "Tsunago" in the title or discription, but no other details about when it was released, or any general information about it what so ever.:/
If anyone knows of a site or a link that might have...
BPT?
Could it be listed in Ripley's catalogue archives??