Conductor ... very bad

There was a Conductor. He was bad. He used not to stop the bus and kill the people on road. One day, driver was driving a bus. Suddenly an old lady came on the road. As he was of bad mindset, he asked driver not to stop the bus. Old lady was killed :(.
Her family filled a case against the conductor. The conductor was charged to give electric shock the same day. When the police started giving electric current to the conductor, nothing happened to him. All were surprised. They tried several times but all in vain. Nervously, they had to release him as per Indian government rules.
Next day, conductor again started his duty and this time a kid came across his bus. This time as well, this unkind conductor asked driver not to stop and kid was severely injured. Again case was filled and conductor was charged with the electric shock. Police tried very hard but nothing happened to the conductor and they had him to leave go of.
This time conductor thought about his bad behavior and wanted to be a kind. The next day, he again rejoined his duty and started thinking of doing things which are good. His bus was just started on the road and he noticed that there was a young boy of near about 17 years age, in the road. He was wearing nice smile and looking energetic. He did not want to take bus on him as he was now good, but driver did not stop and the bus had killed the young boy. He was now used to with the electric shocks. He was again charged with the electric shock and police appeared in the room to give him an electric shock. This time, when they started with the shock, in the first attempt the conductor was shouting with miseries.

Can you answer why? Why not he suffered in earlier two events; and this time he was suffering with miseries.

The visitor with correct answer will be honored with a free dinner with… with … me and that is also at one and only one reputed place – your home :).