Here are some tips if you really care:
****Quoted from
https://www.carbonfund.org/reduce ****
- Accelerating slowly and smoothly
- Driving the speed limit
- Maintaining a steady speed
- Anticipating your stops and starts
Maintenance - Keep your car tuned up and running efficiently.
More Maintenance - Replace your air, oil and fuel filters according to schedule.
Tires - Keep your tires properly inflated (just this can save 400-700 pounds of CO2 per year).
****Quoted from
https://www.carbonfund.org/reduce ****