The document describes using the Analytic Hierarchy Process (AHP) to help a couple choose which car to purchase out of three options: Honda, Mazda, or Volvo. It outlines the steps to build an AHP model in Decision Lens software, including establishing criteria of cost, safety, and appearance to evaluate the alternatives. Pairwise comparisons are made between criteria to calculate their weights, and between alternatives for each criterion. The final weights show the Honda as the top choice.