If you have a dream in which you are driving vertical, this means that you have just gotten some kind of promotion or boost of some sort. You don’t have to have a high paying exec job to feel good all of the sudden. Perhaps you just got a great compliment from a girl you like or someone you really respect. This would definitely result in a similar reaction. You have this type of dream whenever you have just upped a level in life or when you feel particularly good.