It's a motobility car, beautiful little number she is, white, glistening, carefree, kind, has a good sense of humour and takes me places to dizzying heights! 
I had no idea until I thought last night. It's just this number on the inside of the windscreen. Maybe that's what they go off now. In the letter I got to say I had been awarded the higher mobility from DWP, there is a leaflet saying about car tax and, as I was doing some paperwork, I came across it. So it made me think. Anyway, it's been on the road for over a month, literally, outside the house and maybe the police have seen it walking around. I'm sure it's fine. Thanks for your messages. Have a good day. 