If your tire pressure is 5 psi low, that can lower your miles per gallon by 1%. If you have an electric car, your battery will drain faster.

https://www.fueleconomy.gov/feg/maintain.jsp

Walking 30 minutes per day can significantly improve your health.

https://www.mayoclinic.org/healthy-lifestyle/fitness/in-depth/walking/art-20046261

OK, that was obvious.

If you have “range anxiety” you can buy a plug-in hybrid that will run on batteries for short trips but has the backup of a gasoline engine for longer trips.

Combine trips where possible, or do more business virtually