Case 1: Nothing is actually said in the law or in driving tests about dead bodies, but the logical thing to do is to call authorities and avoid running over them!
Case 2: Again nothing is actually said in the law or in driving tests about finding unsalvageable cars but the it is not the citizens duty to handle such things normally towing companies would move it to a recycling facilities.
Case 3: Again nothing is actually said in the law or in driving tests about finding a
close of road by thugs, but the best thing to do is to turn around and find another way to wherever you are going and call the authorities notifying them about the thugs.
Case 4: When you run into large potholes in the ground you are to reduce speed, Steer straight, do not brake dramatically. Let the momentum of the vehicle slow naturally then gradually work back onto the pavement
Case 5 : When an earthquake begins to happen as You are driving the best thing to do is move your car as far out of traffic as possible. DO NOT stop on or under a bridge or overpass or under trees, light posts, power lines, or signs. STAY INSIDE your car until the shaking stops. When you RESUME driving, watch for breaks in the pavement, fallen rocks, and bumps in the road at bridge approaches.