Disincentivizing air travel could have a big impact on climate change as well. I don't understand why those who want to do something about climate change still fly around the country/world like its nothing. A single plane ride from NYC to LA emits about 20% of the greenhouse gases your vehicle does each YEAR. 5 trips in one year and you've essentially been running a second car for that year. [0]

If you care about climate change and you still fly I can't take you seriously.

[0]: https://www.nytimes.com/2017/07/27/climate/airplane-pollutio...