Cars are the greatest danger to human life today

I think that the greatest danger to human lives isn’t cars but the peoples by themselves, because cars are not dangerous if they’re driven with care and more attention. And a very big problem is the drunk drivers; they don’t care how to drive. Another big problem is exhaust fumes. The second problem can be solved by us. There are the hybrid cars that aren’t so danger to our health and environment.
In the first place all the cars are made by humans. …