I drove 1500 miles around Scotland up the west side , along the top and back down the east side a few weeks ago and I was the only 75 on the road it seems. Last week I toured the Lakes and saw a 75 coming towards me on the A595 near Seascale so I waved but I was ignored as usual . Today I spotted a blue ZTT at McDonalds at Thinford near Durham but that is a very rare sight to see another these days .