All of this is, by and large, moot. People (me) will only adopt eco friendly cars* when we are forced to. Why? Well 1) It costs money 2) Most people realise that, even if this country turned zero emissions overnight, it wouldn't make a jot of difference to the world as a whole.
My diesel emits particulates which harm people on busy roads in densely populated areas, I don't live in such a place. A switch to petrol would mean emitting CO2, which kills the whole planet, apparently.
IMO, hybrids are not eco friendly cars.
Except it doesn't......thanks to the DPF.
The bigger issue was NOx but, modern diesels with selective catalytic reaction plus AdBlue, output less NOx than petrols.
There are even a few new diesels (including one of ours), where the NOx levels are not even measurable.
Blame the press and politicians who are jumping on a band wagon they don't understand