If you have dreamed of napping while driving a car: You should not make any binding promises or spend your time elsewhere, unless you are in a position to put your plans into practice. To dream that you are napping while driving means that your daily life will be very busy and you will have hard times. It also shows that you can't spare time for yourself and rest because of your workload. It indicates that this situation will cause great negativities in your life, a negative structure in your life and things will get worse. We can say that it will be good for you to take time for yourself.