I often see examples of toys, particularly toy vehicles, being used in wargames but rarely have any luck finding suitable pieces myself. I may have found one here though:
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It turned out to be quite a drama getting hold of it.
I first saw these some time ago in my usual (city centre) branch of Poundland. They had quite a few on the shelf, but when I took a couple up to the till the barcode wasn't recognised and they said they couldn't sell it to me. I went back a few more times over the coming weeks, hoping that the issue would be resolved, but didn't see them again.
More recently, I went to a different Poundland (out of town retail park) and saw them there. I was able to buy two, although they came up as £2.50 at the till, when I'm pretty sure they were marked as £2 on the shelf. I went back to this branch to try to get some more, but they only had one left in a damaged box, so I didn't bother. But then I tried the city centre branch again and they suddenly had quite a lot of them on the shelf - but when I took them to the till, again the barcode wasn't recognised. This time though, after a bit of faffing around, they did let me have them (putting them through manually at £2).
They seem quite promising. They're designed to have parts unscrew, which is helpful to dis-assembly. Also, you can put two payloads back-to-back on the chassis instead of a cab. That could be handy if building trailers.
My first thought was to make ork trukks for Gorkamorka, but I might leave them more as-is and make something Ridgehauler-like, which I could use with my Necromunda gangs for Ash Wastes/Gorkamorka.
A couple of things I need to figure out are (i) how best to glue the wheels in place and (ii) how to fill in the windows on the cab.