There was an unofficial survey during 1974 which showed—this is the best estimate we have—that 20 per cent. of three-wheeler users would be unable in their view to manage a car. As my hon. Friend knows, I was recently in his constituency where I met a deputation of disabled drivers. I am mindful of the points they made about retaining the vehicles. There are many points of view. I am trying to put forward a policy which will give more freedom of choice to severely disabled people.