You don't get out much I'm afraid. Average is 24-48 months for a automobile lease, and 25 percent of all vehicles in the U.S. are currently leased. 43 percent of all vehicles sold in 2018 were SUV's or Pickups. Before you accuse me....my newest vehicle (I have 3 for a family of five) is a 2004, that I bought third hand and has 280,000 miles on it. It runs fine and i get to where I need to go int the winter without any drama.
As far as cultists...Not a one of us here works for NOAA or NASA. None of us are actual climate modeling specialist or meteorologists, yet we go one about it like we understand the science behind it. We act as it was life or death, and any affront to our preconceived notions are like an attack on our belief system. You won't convince anyone to change by attacking them or beating them with facts. Few people respond well to that. Just better off doing yourself a favor and find a community project to repurpose land-fill materials or participate in a river-cleanup project.
The vast majority of people are not likely to actually do anything other than talk about climate change anyways.
Pollution (CO2) output in the USA hasn't effectively risen since 1990, despite a large population increase. China currently more than DOUBLES the U.S.A pollution output, yet people instead argue with someone (likely an anglo) on an anonymous internet forum, watch a documentary, donate 5 bucks, recycle a few bottles, change their lightbulbs and call it "Mission Accomplished". Some might even go so far as to get the proverbial T-shirt made in China by 14 year old kids, in a factory pouring raw waste into the river.
Meh, you don't need to work for NOAA or NASA to understand the topic well-enough to be convinced that the orthodox science is correct. A physics degree is sufficient to grasp the basics. Personally I've taken post-graduate level courses in the topic - not that I remember much at this point, but there was a time I understood it well enough to see why the denialist arguments were wrong (once upon a time I could have written down the radiative transfer equations or told you what quasi-geostrophic pseudo potential vorticity was...I can't anymore, but I still trust my past self's judgements on the topic)
"Community projects" aren't going to solve the problem, it needs to be addressed at the level of national governments or above. That sort of lifestyle stuff is a way that governments and corporations use to try to pass the buck to individuals, to distract people from the necessity of _political_ action.
As far as China is concerned, China puts out all that CO2 because we've contracted most of our manufacturing to them.
May well be true that I don't get out much, but I do know that the stats say that the overwhelming majority of residents of inner London don't own a car (I have always hated the things, myself, not really anything to do with CO2, just find them noisy, dangerous, smelly, bad for your health, and the biggest single impediment to mobility ever invented - anywhere I try to go, by whatever means, there are cars in the way. They are simply unnecessary in the city, unless you are seriously disabled).
I also know that car leasing is currently a major fad (that at one point looked like it might precipitate the next financial crisis), but it has no overlap with environmentalism that I can see. Generally petrolheads are right-wing.