Perhaps it's possible your source is not correct.
From what I can gather the Alto Duo was designed by a Dave Gornall and his brother, who lived in Manchester, which is where they made the cars. It is possible that a version (Toto?) was made outside the UK somewhere, but your puzzle picture is an Alto.
Both your puzzle car and the pictures I have posted have Lancashire registrations, which would figure if that's where they were built, although the registration is no guarantee as an import could also be registered in Lancashire. However, if my information is correct and they both have Lancashire registrations that would seem to be more than a bit of a coincidence.
There is an Alto Duo register which is run as a sub-section of the Mini Marcos club.
Below is an extract of a blog from an Alto Duo owner talking about the car I have posted pictures of and his car(s):
QUOTE
Yes, I know about that car and those pictures; I just can't stand that colour scheme The guy who owns that one also has 2 or 3 more. He runs the Alto Duo register, which is a subset of the Mini Marcos people.
I didn't build it. I bought it a couple of years ago as a part-restored example from a Mini specialist, who fettled the mechanicals. It needs the interior re-doing from scratch, and a few minor repairs to the body. Unfortunately, 4 businesses and a toddler have made that a little hard to manage!
For my part, I like the shape, I like the height, and I like the idea. It is far too heavy. The weight stems from the fact that the brothers who designed and built it (a) didn't understand GRP, so just made it very thick, and (b) worked for their father who ran an HGV trailer business, so the chassis were welded up from whatever offcuts of steel were in the yard: every chassis is therefore a bit different, but they're all very heavy as a result, although strong. Mine even has a towbar, which will be entertaining to use
The moulds for the car still exist ("on a farm in Wales", I believe), but the current keeper of them is by all accounts a little strange and keeps planning a revival of the car with electric power. He really shouldn't bother without a substantial redesign. There is so little foot room as to be comical (I can't drive it at all with shoes on), the sills are ludicrously high (making access very awkward), and so on.
UNQUOTE
