@chrisjo
I see what you mean, I'd never seen the model in anything other than promotional shots, and never compared directly to a Plarail TGV so I'd concluded they were probably from the same mould with some modifications.
Looking at your photos, it's very clearly another mould altogether albeit one that shares a few similarities to the earlier TGV, mostly in profile and carriage shape more than anything, which I guess is due to the common heritage both trains share in real life
To bring the topic back around to the OP, while I think about it, am I the only person who thought it slightly odd that the 485 Series (guessing that's what it is because it's one of several JNR EMUs where they had a raised cab arrangement) in the station set only has 2 coaches?
Plarail trains are usually 3-car, and of course the original model they used as a basis was 3-car, so why was the centre car omitted? Always puzzled me that did.