There are lots of good surprises that people enjoy.  Everyone likes the idea of being given something good that they were not expecting.  No one likes to be surprised by negative or dangerous things.  When you are driving your vehicle you take for granted that everything is going to continue working properly and you will arrive at your destination with a minimum of difficulties.  However, if you have cheap breakdown cover you will be put into a position of not only knowing that the things you know about will be taken care of, the things that might surprise you in a negative way will be taken care of as well.