A bike is going to get you killed in numerous parts of the Country. Here the massive pick ups that have never hauled more than a sack of groceries take sharing the road with bicycles as a very personal insult.

Depends upon the old one, (huge difference between 12-18 MPG and an EV), and what is done with the it after doesn't it?

I suspect you swallowed a lot of Corpo propaganda to believe the issue is the common individual's actions.
https://theconversation.com/the-carbon-footprint-was-co-opted-by-fossil-fuel-companies-to-shift-climate-blame-heres-how-it-can-serve-us-again-183566
https://www.scientificamerican.com/article/exxon-mobils-messaging-shifted-blame-for-warming-to-consumers/
https://www.bbc.com/future/article/20220504-why-the-wrong-people-are-blamed-for-climate-change
just a few to get your deprogramming started.