The greenhouse gas argument allows governments to tax more and show how green they are by pushing eco-friendly alternatives - the push to electric cars is a classic, let's rape the earth of rare minerals to make more batteries that we can't re-cycle and forget we have to generate the electricity to put in the batteries in the first place.
All the while the hydrogen fuel cell is sidelined because it isn't fashionable.
Pretending we can cool the planet by going vegan and taking less holidays is the height of futility and is a result of those with other agendas jumping on the AGW bandwagon.