Mercury Marine wins 'green' award
 

http://www.fdlreporter.com/article/2.../FON03/2260351

With the computer tech. that's available now days, I can see how
they're doing it now, to get the maximum efficiency on fuel usage. But
there's a lot of things to take into consideration like load, plane
speed, drift, chop, wind, speed, water temp, etc.