Well, put quite simply my 18 year old Range Roper is comitted to reducing polution by;
A) not being recycled every 7 years because it's very well built (well strong at least), manufacturing cars creates a massive amount of polution.
B) running on LPG which is a waste product of refining Eurobox fuel, which if it wasn't used as fuel would be burned anyway, when my RR is being driven on waste I am not drivinng my Diesel Micra.
If I could remeber where it was, there was that Dust to Dust study that showed the Pius was worse for the environment than the V8 Disco 3.