Why We Took the Car - Wolfgang Herrndorf

Mike doesn't get why people think he's boring. Sure, he doesn't have many friends. (OK, zero friends.) And everyone laughs at him when he reads his essays out loud in class. And he's never invited to parties. But one day Tschick, the odd new boy at school, shows up at Mike's house out of the blue. He dares him to go on a road trip with him. No parents, no map, no destination. Will they get hopelessly lost in the middle of nowhere? Probably. Will they meet crazy people and get into serious trouble? Definitely. But will they ever be called boring again? Not a chance.