Well, as it appens I am also a caravanner. I also agree that some caravanners are selfish and I also get annoyed when they travel in convoy. However, as far as ecology goes, look at it this way – as I pootle along at my 50 mph or so with a line of traffic behind me unable to overtake, and nowhere for me to pull in to allow them to pass, I can take some comfort from the fact that although I may be using a little more fuel than normal, the fact the drivers behind me are forced to do 50mph instead of 60 or 70, they are saving fuel, so there is a net gain for the planet.

Isn't that great?