Sparks
As we said, the stranger collected their car jack and equipment, got back in their car, and tried to follow Emma, but they were unable to find her. They notified the police and told them what had happened, but they didn’t seem confident that they would find her at all, or know where she was going.
So for the moment, the stranger could do nothing but she went on about their day and hoped that Emma would not hurt herself or anyone around her. But as Emma was driving off, sparks were flying all over the place from the metal brake that was scratching against the ground at high speeds.