In this 30-second Jeep brand TV spot, Dr. Z answers a letter written to him. Next thing you know, Dr. Z has assembled the entire elementary school class at the Jeep proving grounds for a field trip. Dr. Z explains that American and German engineering and design are helping to improve fuel economy. He refers to three muddy Jeep vehicles behind him as “our cleanest” 4x4s ever. The irony is lost on the kids, who seem to focus on his moustache instead.