The brothers fight until they can’t come to any option other than that Donald needs to get out of the car immediately at night in the middle of no where, effectively ending their co-dependent sibling relationship. By this point in life Pete should have realized that leaving Donald figure things out for himself may be the better alternative, but he just can’t. He is too loyal. Pete can’t even bear the idea of telling his wife that he left his brother along the side of the road with no where to turn. He can’t even kid himself - Pete knows that he is going to turn around and once again pick up the pieces of Donald’s mess, which will enable the cycle to repeat
The brothers fight until they can’t come to any option other than that Donald needs to get out of the car immediately at night in the middle of no where, effectively ending their co-dependent sibling relationship. By this point in life Pete should have realized that leaving Donald figure things out for himself may be the better alternative, but he just can’t. He is too loyal. Pete can’t even bear the idea of telling his wife that he left his brother along the side of the road with no where to turn. He can’t even kid himself - Pete knows that he is going to turn around and once again pick up the pieces of Donald’s mess, which will enable the cycle to repeat