text: These driverless cars alert you when you need to take the wheel and control it yourself. It is a good thing becuase they probably know that they can't drive through what is happening. Like said in the passage, their can be a traffic jam or there can be an accident and that would be a reason why the car will alert you. It would be a bad thing that the car wouldn't tell you when to take over because it would just stop working all of the sudden and that would't be good. But what would be good is to prevent you from having a accident while texting.