From No More Lost Tools: Ford and ThingMagic Team Up on RFID Tracking System for Truck Beds:

Ford F-150 Equipped with DeWalt and ThingMagic's "Tool Link" RFID Tracking System
Ford F-150 Equipped with DeWalt and ThingMagic’s “Tool Link” RFID Tracking System

Using two ThingMagic RFID readers attached to the sides of the truck bed, the system detects which tagged tools have been placed into the truck, and alerts the driver via an in-dash computer system if tools needed for a given type of job are missing.