This Flat Bed - Where From?

[Super]

Does anyone recognize this Flat Bed and if so, where did it come from? With just a train, maybe in a set? I have seen this in other colors. It came with white couplings of course, on this one I replaced them with black. There are other flat beds that are similar but the have molded in bumps to hold some kind of cargo, I am not interested in them. Do you know? Can you help?

What is printed on the underside of the chassis
2008 Gullane (Thomas) Limited
HiT Toy Company Made In China

That looks suspiciously similar to the Snowman Balloon Flatbed, perhaps it's a relative?

[Super]

I only know of one balloon car (red balloon, blue car) but it has things molded to the top deck so I am sure its not that one but you are right, probably a relation as the balloon car and a lot of the ones that carry something have the wooden slats for a deck top like this one does.