bloody caravans, we all get stuck behind those awful, environmentally unfriendly burger vans 
Interested to see the reasoning behind that comment... I'll be willing to bet the carbon footprint of a holiday taken in a car/caravan combo is considerably smaller than a flight and all associated things :-? :-? :-?
Just a pound mind

Ok, so you and the Mrs take the burger van to the lakes, and me and a mate go in my car with a tent in the back...
I would easily get 30mpg, same car pulling a van? 11-15mpg.
So just getting there you pump out twice the polution, not forgetting the 500 cars behind you all doing un economical speeds on winding A roads.
You still plug into power at a campsite using Microwaves, cookers, heaters, lights, fans, all the features a hotel room has.
You mention flights, you do know the new biggest jet in the world the Airbus A380 uses less fuel per passenger than a Ford Focus?
So is more environmently friendly to fly to say the south of France, than drive, dragging a burger van.
