The game road trip is a racing game where you drive a car to various towns. In each town, you can talk to other cars, complete quests, race, compete in mini-games such as car golf, car soccer, and car roulette, and upgrade your car with hundreds of different parts.
You can also collect photos of scenic locations, collect coins scattered around the terrain, and collect stamps for completing various tasks.
The game has a story about a world president, who is also a car, that wants to quit his job. He decides to award the presidency to the winner of the World Grand Prix (WGP), or more precisely, the winner of the WGP can challenge the president for the title.
The gameplay revolves around racing and upgrading your car. To have a chance of winning the WGP, you need two team mates and a Super-A license. You get a Super A license by finishing all nine class A races in at least sixth place, but first, you need an A license. To get an A license, you must finish all class B races in at least sixth place, but to enter those races, you'll need a B license. To get a B license, you must finish all six class C races in at least sixth place.
Winning races earns cash, which can be spent on upgrades for your car.