The last part is especially important. In the analysis with the US average energy mix (where I live), 24 tones of CO2 are produced to power the C40, which is less than a 50% savings over traditional ICE. I’m guessing this assumes about a 50/50 split in fossil fuels vs renewable for energy production. But with 100% renewable, this comes down to essentially zero CO2 production to power the car. That’s a huge difference.
In Tacoma WA where I live, somewhere above 90% of our electricity is renewable (mostly hydro), so the CO2 production to power the car is very minimal, making the saving compared to ICE much more significant, and the break even point happens way sooner.