In the same sort of way, do you notice a lack of pre-war cars and trucks at shows these days? When I started out being interested as a teenager there used to be rows and rows of cars from the 1930's, now as time has gone on the trend is for cars more from the 70's/80's at our local shows.
I also notice around our area that there is a lack of wartime British made vehicles anyway, it always makes it nicer to see them because of that.
I know of quite a few vehicles tucked away in the vicinity of our village, very few will ever be seen or restored.