The phrase "There's a reason we call it the 'idiot light'."

The video opens with a man standing in front of a car, speaking directly to the camera. It then cuts to a close-up of a car's 'check engine' light. The man reappears, holding a small white device and a box. He demonstrates plugging the device into a car's diagnostic port and then shows a smartphone app displaying car diagnostics. The video shows the man opening a gas cap and then returns to him speaking. It includes brief scenes of mechanics talking to customers and a close-up of a diagnostic tool. The pacing is quick, with frequent cuts between the man, the device, and the app.