I think that if you know how to ride a bike you should use it as much as you can for transport.
If your going to a shop in your town close to where you live you should walk or ride a bike.
A car lets out bad fuels so if there’s a traffic jam anyone walking by would inhale the fuels.
When you’re in a traffic jame maybe you could turn of your car.
If you ever drop some rubbish on the ground please pick it up and put it in a bin or your pocket until you get home.