My job is within 10mi of my home. If I walk there, I get there in 2 hours. If I take public transportation, it takes me 1h45m to 2h20m depending on the day.
I also live in a community where our electricity is from 90% renewable resources, 10% nuclear. Switching to an electric car is a 100% reduction in carbon usage for my commute.
Using the bus isn't.