"But wait!" you're probably saying, why should anyone be happy that what began life as a demilitarized urban assault vehicle is about to become the $113,000 plaything of people who probably don't even think about climate change?

The answer: "accidental environmentalists"
But how is it possible that buying showboat electric trucks which might be fueled on coal-fired electricity and substitute for mass transit could be good for emissions?

Three reasons:

1. We still need to make batteries a lot cheaper for them to be the default for all transport.
The battery pack in the Hummer EV is 200kwh. That's enough juice to power the average American home for a *week* -- two in good weather.

The more batteries GM and Tesla and everyone else sells, the more their price drops. Look at this chart:
3. Research from Matthew Kahn + others finds once you make one "green" choice, you're more likely to make others. (Like how iPhone converted many to the Mac.)

Today, an electric Hummer, tomorrow, solar panels on your roof to survive the apocalypse?

https://papers.ssrn.com/sol3/papers.cfm?abstract_id=2541530
So why haven't you heard more about "accidental environmentalists", or their close cousin "convenient environmentalists" -- coined by Magali Delmas? https://www.ioes.ucla.edu/green-bundle/ 
As someone who has covered climate and tech for 15 years, my conclusion is that environmentalists, by nature activists, have fundamentally misunderstood how to move the needle on public opinion on things like taxing carbon.
You can follow @mims.
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