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A comment on Cooling the Earth with a cloud of small spacecraft near the inner Lagrange point. Parent comment

Re:Cooling the Earth with a cloud of small spacecraft near t... by thriftwy on Saturday August 26, 2017 @10:42AM (#15105641)
The making of a new car is an extremelly CO2-intensive process. Ecologically damaging, too.

The most green car is the one you already have, as long as you do, even if it's a SUV.

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Re:Cooling the Earth with a cloud of small spacecraft near t... by maxerickson on Saturday August 26, 2017 @10:55AM (#15105705)
Over medium time scales people switching to smaller vehicles won't really show up as additional demand and thus won't drive any increase in supply.

If people downsized in large numbers it might even move some buyers away from new large vehicles (if the anticipated resale value of large vehicles dropped).

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Re:Cooling the Earth with a cloud of small spacecraft near t... by hwillis on Saturday August 26, 2017 @10:57AM (#15105715)
replacements over ten years means replacing cars at end of life. Additionally, 90% of a car's total life cycle CO2 emissions are due to fuel use[1], so its actually very quickly worth replacing a car. With the current grid it's between 30-60k miles, with a fully green grid it's as low as 7k miles.

[1]: http://www.ucsusa.org/clean-vehicles/electric-vehicles/life-...

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