I expect in most of the world that isn’t wild west, you can’t. It would either be illegal because that’s no longer a car that has passed approval and/or you would need to register it as a new car and pay some astronomical sum for that.

Didn’t read because link and topic, but since it’s Germany I wonder if they’re using some blanket ban on mentioning gas chambers as the excuse to keep gas chambers hidden.

Most likely. And actually humane gases would be rarer and more dangerous to … well, humans working there.

CO^2 is The gas that causes panic since that’s what the body uses to regulate it’s oxygen/carbon cycle. It’s a built in alarm. Plus you can just vent it to atmosphere. And it’s cheap.

Either is still absolutely nothing. We’re far over 2€/l and I’m guessing that’s not even high.

Too little, too late is still better than nothing, I guess.

https://www.carscoops.com/2025/10/kias-gas-scented-air-freshener-aims-to-help-the-ice-to-ev-transition/

Also solved a while ago.

Though gas still costs nothing in US.

One of the most important projects for humankind in it’s existence. Computing changed the world and keeps on changing it for the foreseeable future. GNU has lead the fight against its corruption.

It has not been successful enough. And Stallman can be kind of an ass, which doesn’t help, but at least they got the thing started.