Of course, if walking, biking and public transportation are not viable options for your commute, there are still other alternatives that can make your daily trips cheaper and more environmentally friendly. One such option is carpooling -- simply finding others who have a similar commute and offering to ride with them.
Because you can split fuel costs and cut your emissions per person, carpooling is a great way to cut down on expenses and feel good about reducing your personal environmental impact.
The challenge to carpooling is that you need to not only find others who have a similar commute but are also on a similar working schedule. Adapting your commute to a bus or train schedule is difficult enough for some people, but to rely on coordinating a ride with one or two other people can be extremely restricting.