I'd be very grateful if anyone with direct experience of these measures would come forward. The only case I know of personally is a friend who was stopped and although he had insurance issued by a Spanish co which does not require the vehicle to have an ITV or MOT, simply that it must be 'roadworthy'. He was told by the police, who were on a specific project to check foreign plated cars, to start the process of registration or scrap the car or remove it from Spain. In any case within 6 weeks. That was 4 months ago and he has just abandoned the car on his finca and has heard no more.