We don’t need to even do the math ourselves. It’s already be done countless times and the results are always the same.
BEVs over their lifespan in the worst case scenario produce less than half as much CO2 emissions than a similar sized ICE vehicle.
https://www.epa.gov/greenvehicles/electric-vehicle-myths
https://climate.mit.edu/ask-mit/are-electric-vehicles-definitely-better-climate-gas-powered-cars
I’m surprised you struggled with this, with so many creditable sources available this was a really easy thing to look up.
Any one who assumes that another party is going to blanket support a non-confidence vote doesn’t understand how minority governments work.
These are times when other parties have the leverage to influence what bills are being passed.
If things got bad enough that no other parties agreed with direction then ya we would be heading to vote, but realistically things aren’t that bad right now, they could always be better, but it’s not bad enough to just throw away leverage.