In the car, Jules and Vincent are still arguing about whether what just happened was random chance or an act of God.
Jules is so convinced that he says he's going to retire from the life; he's through.
Vincent turns around to ask Marvin his opinion about the situation but forgets to put the safety on his gun which goes off, killing Marvin and splattering his blood and brains all over them and the car.
Vincent is very annoyed.
Jules calls up his friend Jimmie so that they can get off the road ASAP.