Yet DuPont points to the example of its car-paints business: because it makes money by painting cars for car makers, it shares their incentive to sell less paint.

ECONOMIST: Chemicals

In addition to offering canal-side camping and houseboat rentals, John and Paula host pontoon excursions to the lakes, and have a wide range of activities on their property, including pottery, painting and radio-controlled car racing.

BBC: Exploring New York��s Erie Canal

In one moment, all the moves he had been learning while painting a fence and waxing a car come to life.

FORBES: You Are Interviewing For Your Next Job -- Now

Inside, in a space not much bigger than a three-car garage, was a single shaft-painting machine, a work station where clubs were cut to size and grips attached, and racks containing 40, 000 to 50, 000 shafts and 5, 000 clubheads.

WSJ: Psst��Wanna Buy a Counterfeit Golf Club? | Golf Journal by John Paul Newport

Engineers can calculate the most efficient route for a spray-painting robot to take around a car body, work out how quickly parts must be supplied, look for bottlenecks or even tell if a human worker's task is likely to give him backache.

ECONOMIST: Manufacturing technology

During the painting of the shell, a rod was inserted straight through the car allowing the shell to be spun round as it was painted.

CNN: A design classic