Monsters University

Monsters University is a 2013 American 3D computer-animated comedy film produced by Pixar Animation Studios and released by Walt Disney Pictures. It is the fourteenth feature film produced by Pixar and is a prequel to 2001's Monsters, Inc., marking the first time Pixar has made a prequel film. The film received positive reviews and was a box office success, grossing $743 million against its estimated budget of $200 million. 

This film tells the story of two monsters, Mike and Sulley, and their time studying at college, where they start off as rivals, but slowly become best friends. A young monster named Michael "Mike" Wazowski dreams of being a scarer (a monster who enters the human world at night to scare children so their screams can be harvested for energy) when he grows up, after visiting Monsters Inc.—Monstropolis' most profitable and best-known scaring company—on a school field trip. Eleven years later, Mike is a first-year scare major at Monsters University, where he meets a large, blue, furry monster named James P. "Sulley" Sullivan.

Sulley is a nature scarer, but does not knows the technique taught in the university because he thinks are useless and he is lazy. On the other hand, Mike does not have the talent to scare people, still he has the technique needed because he studies a lot a put all his effort to become the next scarer. After failing to enter the Roar Omega Roar's fraternity and failing the program, he decides to create a team called Oozma Kappa with rookies to prove to the rest of the monsters, and principally to Dean Abigail Hardscrabble, that he can remain in the program. His only important asset was Sulley, who decided to join the team in order to prove he can be a Sullivan just like his ancestors were. After many battle-rounds they became friends and finally won the competition. 

However, Sulley told Dean that he cheated in the competition so that Mike's scream will scare enough to win the final match against Roar Omega Roar. As Mike was so angry because he thought he was not scary enough, tried to scare some people in the human world by entering in a door located in the university's lab. Sulley follows him and after the reconciliation they realized they were trapped in the human world, and only with screams they were able to get back to the university. They make a plan to escape, even though they succeed, Dean Abigail expelled them from the university but also congratulates them for their work. They continue to be best friend as we can see in the movie Monsters, Inc. from 2001. 

Reference:

http://en.wikipedia.org/wiki/Monsters_University

Cars

Cars is a 2006 American computer-animated comedy-adventure sports film produced by Pixar Animation Studios, and directed and co-written by John Lasseter and released by Walt Disney Pictures. It is Pixar's final, independently-produced motion picture before its purchase by Disney. Cars premiered on May 26, 2006, at Lowe's Motor Speedway in Concord, North Carolina, and was released on June 9, 2006, to positive reviews. It was nominated for two Academy Awards, including Best Animated Feature, and won the Golden Globe Award for Best Animated Feature Film. 

This film is placed in a world populated by anthropomorphic transportation, including cars, trucks, fire engines, suvs, among others. The story is focused on a race car called Lightning McQueen, who dreams to win the Piston Cup in order to change his sponsorship. McQueen needs to win a race between Strip "The King" Weather and Chick Hicks, after a triple-tie. He wants to change Rust-Eze, a rust treatment for old cars, to take The King's place as the sponsored car of the lucrative Dinoco team.

This tiebreaker race will be competed in Los Angeles, and since it is a long distance, McQueen wants to travel in his big rig, Mack, the whole night. In the way to LA, the door where Lightning was sleeping opens, a he gets lost in the middle of the highway. He desperately tries to follow a path, and without knowing he arrives in a town called Radiator Spring. At first, he dislikes everything and everyone in the town, doing community service repairing the street. He takes orders from Doc Hudson, who turns out to be the "Fabulous Hudson Hornet", inspiring McQueen to do things better in the town and helping in the repair of the street by his own.

Later, he finds out that he is in a town that was famous because it passed through the U.S. Route 66, but when the Interstate 40 was built it disappeared from the map. Consequently, Lightning starts to be friendly with everyone, specially with a tow truck named Mater and a porsche named Sally; Mater is consider to be his best friend, while Sally his girlfriend. Finally when he is found in Radiator Spring he competes in LA against Chick and The King. In the middle of the race he wasn't focused until his pit staff talks to him and were Hudson with more friends from the town. In the last lap Hicks sends Weathers into a dangerous accident. Seeing this, McQueen stops just short of the finish line, allowing Hicks to win, and drives back to push Weathers over the finish line. He ends up like a hero and receives an offer to sign for Dinoco, but he refuses and stay with his actual sponsorship because of the support given to him.

Reference:
http://en.wikipedia.org/wiki/Cars_(film)