I strongly believe in reducing the adverse impacts of motor vehicle emissions on air quality; in reducing greenhouse gas emissions; in replacing imported petroleum with domestically produced renewable fuels; in putting local people to work; in using resources wisely.  I take a bus (mostly Adirondack Trailways or Greyhound Lines) on many long-distance trips; intercity buses have an average fuel economy of 200-250 miles per gallon per passenger, compared to commercial airlines which get 30-40 miles per gallon per passenger, or to driving a car. I also drive a 1981 Datsun 720 pickup truck with a 2.2-liter SD-22 diesel engine. It is one of the most fuel efficient pickup trucks - approximately 25-35 mpg in the city, 34-40 mpg on the highway.  On short trips, I often use zero-emissions transportation. That is, walking, riding a bicycle, cross-country skiing, paddling a canoe. It is cheap and healthy. You don't have to be a canoeing instructor or a river guide for the pictures on the left (click to enlarge) to represent your morning commute to work - most cities are build around rivers, which - once - served as key means of transportation.