By Seth Godin: Imagine that half the cars in the US get 10 miles per gallon. And half get 40 miles per gallon. Further stipulate that all cars are driven the same number of miles per year.
Now, you get one wish. You can give every low-mileage car a new set of spark plugs that will increase fuel efficiency by 5 mpg, up to 15. Or you can replace every 40 mpg car with a car that gets 75 mpg, an increase of 35 miles for every gallon driven.
Read complete post The Magic of Low-Hanging Fruit
Source: Seth Godin's Blog, 29 June 2008.