Mums little yellow car was well known around Bury (and now lives on in France). I was driven by mum in this vehicle several times and soon came to relise that she couldn't hear the engine and possibly didn't know how to tell it's speed. "Mum your doing 50 MPH in a thirty limit and your in third gear" "Slow Down !!" I had to tell her. Perhaps she was better than I thought as she never had an accident, apparently though she had seen quite a few through her rear view mirror.