The Alphabet game is one of the longest games, and there is no end until you stop it. You start with a word for the letter a. The next person says that word and a word for the letter b as well. The next person must say the first and second word, and come up with a word for the letter c. This continues all the way until you get to z, and then you can start over. The person who forgets one of the words is out, and the game continues until the last person remembers every word so far. You do not need any equipment for this game. All you need is two or more people, and you are good to go.
Car tag is one of the other popular car games. You will choose a certain car and whenever you spot one, you can yell and punch another person. You cannot count cars in a lot, because there are too many. For example if the car you are looking for is Volkswagen, then you cannot count passing by a Volkswagen dealership. The game is over when you reach your destination! These are just a couple of car games you can play, if you want more sign online and find a list. Let your kids pick out their favorites and you will be able to prepare for the next road trip.