To dream that you are traveling signifies that you enjoy what you do (hobbies, career, interests) and find much pleasure in it.
To dream that you are traveling through an unknown area represents your rivals who are lurking around you.
To dream that you are traveling in a car filled with people suggests that you will make new and fun friends and have many exciting adventures.
To dream that you are traveling in a car by yourself signifies troubling matters ahead for you.
Also see “Time Travel.”