HIERARCHICAL SEARCH SECTION The search below represents a hierarchical search. This means the subsequent search options are dependent on those previously selected. For instance, should you select Chassis Cab as the Category, this means only manufacturers that have a Chassis Cab in the inventory will be available selections under Make. The Model field will only include models that are Chassis Cabs for the selected manufacturer. This can continue on through Fuel, Drive and Cab/Body, but it doesn't have to. However, it does require you to click "Initiate Search" so the system knows you are finished with your selections.