in my point of view human driving is safe and good because in developing countries like india..and some other coutries where there may be more population..more poverty..less safety measures...if we take a robot driver there will be crisis in unemployement who are not educated ..some of them are leading there lifes with the income of driving acar or abus.....if we use robot the cost will be high only rich can use so there will a sort of distrubances in roads ...if the car is repaired at some place far away from the city a robot cant repair the persons who are inside the car they dont know how to repair...while we are going single the robot cant talk with us if there is a human we cant get boared and we cant feel any unhappy while journey..if robot drivers are used in trains there will some what good but implementing of robots on roods is like playing with a fire ...robot donot know any humanity...if some thing hapeen in road the robot cant react if it is a human he can help if any fatal incident happen..........atlast iam supporting only humans.....keep robots in industries or some other places where there is no us of human like highly radiation areas in power plants ...

Iam supporting robotic drivers because of following....
Unlike humans computers doesnot get bored or tired
Acoording to US DEPORTMENT OF TRANSPORTATIONS NATIONAL MOTOR VEHICLE CAUSATION SURVEY says 94% of road accidents are caused due to human errors
Driveress cars have cmos radar on a chip ,weather radars, camers to control
Google tested 700,000 driverless cars without any accident
By driverless cars can expect increase inroad way capacity and reduced trsffic congestion
driverless can eradicate not legally eligible persons,drink drivers,young and old people with disability
Example:
             Now in western australia driverless heavy duty trucks are moving over dirt tracks and helping workerd in pilbars mines .50 of these trucks have driven millions of killometer without driverd.....

then how about new technology

thanx for reading my comment....... but in futur you will  realise fhat robots are some what better in doing job in places where man cannot