I don't know. Maybe he was drunk and that's why he fled the scene, to not be caught with alcohol in his system. Now that they can't prove that he was drinking, he turns himself in. But yes, it is VERY suspicious that the looser went into a religious Jewish neighborhood. In his drunken mind, he might have been thinking of the possibility of running over some Jews with the car.
And the whole story about running away from a gunman, ridiculous. If someone would have been shooting at him, there would be bullets in the car, around the neighborhood, people hearing gunshots. And he would not have just been going at 60- not if he was running "for his life". Nor would he had gotten out of the car and run away by foot, if someone was really chasing him. A killer AND a liar!