That one looks photoshopped and I have a feeling that the industrial complex in the background may be in Germany. Yes, the temp tag can be renewed but only one time and there's a prohibition on French nationals living in France preventing them from doing things like registering their cars in Monaco for tax reasons (which would be the only motivation). There are standard homologation laws which pretty much mean that you can buy a car in any EU country and register it in another one (except the UK which has it's own rules and is the only European country to drive on the left and to use miles as a measurement standard).
But we're going off topic here.....