I used to throw newspapers in the mornings. Once I got good I would drive a constant 20 to 30 MPH. Since I was the only one driving around at 3:30 in the morning, I don't have to worry about traffic. I could drive on the wrong side of the streets, and drive on the sidewalk! Because you can see other car's headlights, I can blow through all the stop signs at 20MPH! I Could do a 1.5 square miles of residential area in 1 to 1.5 hours. FE would be only slightly worse than normal driving. The wear and tear on my car depends on how you treat it. Constant 25 MPH is less wear and tear than "normal" Except front tires last only 10,000 miles, because of all the turning.
A car with the smallest engine possible would be best.
http://en.wikipedia.org/wiki/Grumman_LLV about 100 hp in this
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