Can a son that has no insurance drives parents car?

If your parents put your name on their car insurance, that is you as a named drived you will be able to drive their car. This is often a cheaper way of insuring you to drive a car than having you as the person that takes out the car insurance. You will not be covered to drive other cars however. Their are some insurance companies now aimed at insuring young drivers which is something that you could look into.