If all the cars on the road were driven by machines I speculate their would be fewer accidents than there are today. Human drivers can be unpredictable, making

If all the cars on the road were driven by machines I speculate their would be fewer accidents than there are today. Human drivers can be unpredictable, making it hard for a machine to anticipate. There are also unpredictable events not propagated by humans or human drivers which would possibly result in an increase in these sorts accidents if all the cars were driven by machines.