I understand that isn't possible for everyone and/or everywhere, but the biggest saving is not even having a car in the first place. Not just the actual price of the car (and it's depreciation), but the monthly/yearly costs associated with owning one. Insurance, taxes, maintenance and possibly repairs.
It has been a very long time since I actually owned one, but at least here (EU) it can easily be like 150€ a month and you haven't even driven a single kilometer. I'm pretty sure it's physically impossible for me to use up 150€ in electricity with an eBike in a month, and there isn't even any fuel accounted for.