Try choosing a sustainable mode of transport such as:
- Taking Public Transit
- Car Sharing
- OR decide when it is not necessary to travel and try telecommuting!
Sometimes taking a car is unavoidable, in these situations try and make environmentally conscious decisions such as driving only when necessary, choosing a fuel efficient vehicle and driving to achieve the best fuel efficiency (i.e driving techniques, maintenance, tire air pressure, idling, etc.) and using alternative fuel sources.