Been down this road. PUN!
Logic has very little to do with vehicle selection.
First and foremost, it is about stroking the ego.
They bolster their choice with made-up supporting "facts".
You will get nowhere with actual facts.
If you wish to influence her away from a stupid, illogical choice, you'll need psychological tricks.
But I don't have any.
Also you will find that yours is a very lonely voice, as I fear the vast majority of her "consultants" happily recommend the biggest, thirstiest, stupidest thing they can think of. After all, they aren't paying for it.
I'm resigned to leading by example. The logical arguments were a waste.
Sometimes they need to figure it out themselves (if they ever do). An ex-friend of mine, a flaming liberal, very vocal about anti-oil (like drilling, pipelines, etc) replaces her economical sedan with an SUV. I pointed out that in order to fuel that thing she's gonna need a lot more of that drilling and pipeline stuff. Only after enough time had elapsed for the increased costs to sink in did she go back to an economical sedan.
