Shiny floor

One of the tyres on my car has been showing signs of a slow puncture, so  when I went to put more air in the tyre at lunchtime, the reading had gone down to 9!  So this photograph shows me in the waiting area of the garage while the tyre was being looked at.  Apparently it was a rim leak, something I have never heard of, but they didn't charge me anything so that's ok.