When Eddie gets into Barry's car for the first time, he tunes the radio to Beverly's station by pressing one of the five preset buttons and then fine-tuning just a little with the rotary knob. The location of the preset button he pushed and the place where the tuning indicator slid were not in the same section of the dial. Eddie had never been in the car before, so how did he know which button to push? The more logical thing for a complete stranger to do would have been to simply use the knob to move the selector.