I suspect it’s something that requires a bit more research than just the odd lazy bit of Googling. Nationality and manufacturer would obviously help, then a case of trawling through whatever archives remain regarding ‘paper’ projects for each manufacturer.

It’s equally possible that it’s just a concept with no model number, but there are enough special features on the model to make it look a bit more than just an item of whimsy.

Sadly I don’t have a clue where you’d start to look. But I’m pretty sure your answer doesn’t lie with Google.