SMC had 10 Twizy's for sale which is where I bought mine from. I opted for a Blue one which I've had now for just over a week. This weekend I went to remove the rear seat and found that me key won't open it. As all 10 had been previously owned by the same company I'm thinking that at some stage the back seats got mixed and that my seat is in another car. I think they had 4 blue ones. I know where one of them is as it's Jonathan on the forum and he has checked his today and it's not that one.
So the question to everyone else is did you buy one of the others and if so please see if you can unlock your back seat, if not I may know why.