OK. So now we have established that americans have bigger and less efficient cars. How do you think that that effects your GHG emissions? If you want more data, the Congressional Budget Office has a great page that shows that fuel economy is sliiiightly improving every year (i.e. if only cars hadn't grown so much eh?) and miles travelled is waaaaay up. So any technological improvements made has been undone by just consuming more. Did I mention Jevons paradox? https://www.cbo.gov/publication/58861

Regarding methane. A major source of methane is the agriculture sector. Look it up in the diagram I sent, it's the second biggest source. Specifically, 1kg of beef emits 4x the amount of GHG that 1 kg chicken emits, which in turns emits many times more than 1kg of plants. Remember that part about diet?

Also, methane is a side product of oil production (it escapes when you drill). That's why in the diagram it is the first source of GHG. Still think that methane has nothing to do with cars?

I live in France currently; 70% of our energy is nuclear. In the Netherlands the decades-long natural gas infrastructure is being phased out for solar PV and geothermal at a phenomenal rate. In 8 years they went from 1% to 18% of national usage. 4 GW of capacity was installed only last year.

If ever you were in need of data : https://en.wikipedia.org/wiki/Solar_power_in_the_Netherlands

That's not some accident of history. The Dutch made a political decision to invest, like a responsible, first-world geopolitical actor. The US could do the same. If they wanted to.

Let me guess. You're going to say (again) that "all of that is un-inmportant, we just need to go to nuclear". Even though I've already shown that the difference between France (70% nuclear) and the Netherlands (0% nuclear) is x2 instead of x3. That's because electric power is only 25% of GHG emissions. 28% is transport, 23% is industry, 10% is agriculture. Data (from statista no less) : https://www.statista.com/statistics/1200954/ghg-emissions-br...

Read some of the pages I've sent. It's important.