Doc Hudson

Doc Hudson (also known as The Fabulous Hudson Hornet or simply Doc) is the tritagonist of Cars. He is voiced by the late legendary Paul Newman (in one of his final film roles).

Doc is a car of few words, but many talents. He not only serves as the town judge, he's also Radiator Springs' resident doctor. Doc is respected and admired by the townsfolk for the way he looks out for their health and tends to their aches and pains. No one knows too much about Doc before he came to town. He keeps his private life about being a famous race car private and after Lightning McQueen came to town he was first upset and hates him due to he is a race car and he wrecked the road by accident but after he shown he changed he lets Lightning set up his racing headquarters in Radiator Springs and become McQueens mentor.

Official Bio
"Doc is a car of few words but many talents. He not only serves as the town judge, he's also Radiator Springs resident doctor. Doc is respected and admired by the townsfolk for the way he looks out for their health and tends to their aches and pains. No one knows too much about Doc before he came to town. He keeps his private life private. But if you've got a bad spark plug or a rattle in your engine, his door is always open."

Cars
He was once one of the most famous racecars in history; he won three Piston Cups, and still holds the record for most wins in a single season. However, it all changed for Doc when he was involved in a terrible crash during the final lap of the 1954 Piston Cup championship race, which saw him put out for the next full season. Upon his return, he was received with a complete absence of fanfare and told that he was a has-been who had been passed up for the next rookie in line. He reluctantly resigned from the sport, and vanished from public. He eventually settled in a forgotten town called Radiator Springs and moved into a house in the nice town. In his house he kept a newspaper article on the career-ending crash as a reminder never to return to the life that nearly killed him.

Jaded by the racing scene, he left that world, apparently taking out time to study medicine. The famous #51 disappeared into obscurity, leaving many wondering where he had gone. He instead opted for a simple navy blue paint job and the life of a physician in the tiny town of Radiator Springs, the "shining Gemstone" of the Mother Road - Route 66. He runs the Ornament Valley Mechanical Clinic as a "Doctor of Internal Combustion". As times changed and the town got bypassed in favor of Interstate 40, Doc stayed on, even when the population had dwindled to a meager dozen or so residents. He is respected, well-loved, and serves not only as the town's physician, but as its judge as well. However, nobody in the town had any idea of his past as a racer; he was just an ordinary Hudson Hornet to them.

Upon meeting Lightning McQueen, who had accidentally destroyed the main road in town, Doc saw far too much of his past in the rookie. He wanted to send the racecar out of town but Sally persuaded him to commit Lightning to community service by paving a new road. Only after an hour, the rookie attempted to quickly finish the job, only to do a sloppy job. Doc ordered him to tear up the road and redo it. However, he challenged Lightning to a one-lap race around Willy's Butte if he wanted his freedom. He anticipated that the racecar who is too used to asphalt would not do well on the dirt track and lose control on the final turn right into a cactus patch. As he prepared to go to sleep, Doc watched with smugness as Lightning miserably began to work overnight.

The next day, everyone wakes up to find that Lightning had paved a good road up to the intersection, at least half of the job; Sally commented that Doc should've thrown the rookie into a cactus patch a lot sooner. Doc then found Sheriff watching Lightning attempted to make the last turn around Willy's Butter, having ran out of asphalt in the middle of the night. Doc volunteer to take over watching Lightning and attempts to give him racing advice on how to make the turn. However, Lightning failed to understand it and rudely drove off to try the course again, so Doc let him be.

On the third day, Doc is operating on Sheriff when Lightning rudely burst into his office, wanting to ask for his gas ration. Doc ordered him to wait by Flo's V8 Cafe. Soon after, he finds Lightning in his garage, having discovered his identity as the Hudson Hornet. He was less than happy when Lightning discovers his past. Doc refused to speak of his past and called his trophies "just an empty cup". Later in the day, Doc put on his racing tires to take a lap around Willy's Butte and successfully made the turn. But when he realized that Lightning was spying on him and prompted drove back to his home. Lightning followed him and asked why he gave up on racing. Doc then reminded him of his crash in '54 and how the sport rejected him after he recovered. Though Lightning insisted that he's not like the sportscars who rejected him, Doc demanded to know if he had ever cared about anyone besides himself. When the rookie hesitated to answer, Doc tells him that the Radiator Springs residents look out for each other and he doesn't want them reliant on a selfish car like him. Lightning then retorted that Doc too is selfish, not opening about his past to his friends. Instead of countering, Doc angrily tells him to finish the road and leave town.

On the fourth day, Lightning had finished fixing the road and decided to stay for a while, Doc was unable to bear having him around any longer and called the news and press to immediately take him away to the Piston Cup, declaring that it is best for everyone only for Sally to retort "best for everyone or best for you? Seeing how disheartened everyone was by his unplanned departure, Doc realized that Lightning had become more important to them than he thought and instantly regretted his actions as he is left alone at the blinking traffic light. He eventually admits the truth to everyone about his racecar days and he took back his old #51 colors to become Lightning's pit crew chief, bringing nearly the entire town (except Sally, Red, and Lizzie -- who watched the race on TV) to the Piston Cup to support Lightning as his pit crew (and in an ironic twist of fate, finally received that long awaited fanfare for his return). When Chick Hicks caused Strip "The King" Weathers to crash, in a similar manner to Doc himself, Lightning chose to forfeit the race to help the King cross the finish line. Doc then expressed how proud he is of Lightning.

By the end of the film, Doc opts to keep his racing colors, and becomes a trainer as well as a friend to Lightning. Just like Lightning, Doc learned some lessons: friendship, promises, how greed affects others, and that secrets can't be kept forever.

Mater and the Ghostlight
Doc appears in the short film, where he scares Mater into believing in a monster called the Screamin' Banshee, which actually ends up existing.

Cars 2
Doc died prior to the events in Cars 2, but posters of him are still shown in his museum. In memory of him, the Piston Cup was renamed the Hudson Hornet Memorial Piston Cup, and gets a new logo with an image of the Hudson Hornet and the words "Hudson Hornet" above it. It appears prominently on Lightning McQueen's hood. Doc’s office was converted into the Hudson Hornet Racing Museum.

The circumstances of how Doc died are unknown.

Cars 3
After Lightning McQueen is forced out of the racing world following an accident during a Piston Cup race, he looks to his former mentor for inspiration. His voice will be provided by archived records of Paul Newman for a series of flashbacks. The flashbacks will depict Doc racing with old friends and competitors, such as Louise Nash and Junior Moon. In one sequence, Doc performs a flip move to overcome another racer. McQueen's student, Cruz Ramirez, utilizes this technique to win the Florida 500. It is revealed that Doc crashed at the Daytona Beach race from losing control one lap after taking the lead. Doc first appears in flashback when he is talking to McQueen about real racing. When Lightning meets Smokey, Louise, River Scott and Junior Moon, they tell him of stories of Doc in the old days. Doc didn't the let the new rookies stop him from coming in first and beat them even if they were faster than them. Lightning thought Doc wasn't happy like he was after his crash, until Smokey took him to his garage and showed him all the things Doc sent him since he began training Lightning. During this, McQueen has flashbacks of his old mentor, including where Doc was twirling stiff on his nose and told him to take notes on it, when he and Doc were racing and Doc smiled and laughed at him when he fell I need the Cactus again. Smokey tells him that, while nothing was ever the same after his crash, Lightning is what made him so happy about racing again. At the end Lightning now acts as a racer and crew chief to Cruz and Dinoco/Rusteze. Lightning decides to try something new and takes a new paint job inspired by Doc, having a "old-school" look to him now and races with Cruz like he and Doc used to do.

Trivia

 * Despite the fact that Doc died before the events of Cars 2, he actually appears in Cars Land in the Radiator Springs Racers ride, implying that the events of that ride may have occurred after the events of the first Cars film, but before the events of the second. After you get tires from Luigi or a paint job from Ramone, you'll meet Doc, who is your crew chief for the race. Doc will be giving you some racing advice through out the race. At the end, Doc will say that you did a good job. All his lines are performed by Corey Burton for this ride.