When Maude and the family start singing in the car, "Gray clouds gonna clear up...", Homer and Ned are walking straight and are right next to the barbecue. It switches to an overhead shot of them, and they are just now walking away from the car, straight, and a few steps away from the BBQ. Then, it switches to an up close shot of them, and they're now about 15 steps away from the BBQ and walking to the right.