What is the use of this truck?

I am making a Youtube Series on TOMY/Trackmaster Trains and I was wondering what use of this truck is? What is its purpose? It came from a set with an EF electric engine.

[Super]

Looks like a car carrying flatbed to me. Could it be like this one? https://www.1999.co.jp/eng/image/10108220/20/1
Or more likely, because it doesn't have a silver bed, it came with the Tomica Load Go Set. https://www.ebay.com/itm/Tomica-Hypercit...3641.l6368

Most likely, as I have the station, but not the figure, car or track.

[Super]

There are many of this type open car hauling flatbeds in a variety of colors.

@Jack Orange @Super:

Thanks for the photo and links! I was considering these flat cars for a stalled project but now I see that they aren’t going to work.