Presentaton/Article for non-ag people information

I have been asked to do both a presentation and and article describing and explaining what precision ag is to some non-ag audiences?  Does anyone have any suggestions how to tackle this one?  I want to illustrate to them how advanced and complicated it can be but yet how beneficial and useful too.  Since they are non-ag folks I could easily run the risk of getting too complicated and losing them so want to be sure not to do that.  If anyone has any really catchy pictures or information or anything that you think would be helpful, I would sure appreciate it.  THANKS