This is nothing to do with sanctimony. I'll freely admit my carbon footprint isn't great at all.
But the facts are the facts. It's precious stuff, we should not be pissing it away.
You cant pick and choose these things , just because you drive a pious doesnt mean you can ignore the other areas of your carbon footprint that are pissing it away and lecture others on their choice of car.
What about carbon pffset rangerovers Where they pay to have a bunch of trees planted in exchange for a little sticker on the back that says carbon offset ?