Later, at an exhibition race in Radiator Springs, Mc Queen and Cruz reveal they have adopted Doc's old racing colors and number, respectively, to honor his memory.Tex Dinoco informs the group that he has bought Rust-eze from Sterling, and Mc Queen decides to continue racing and train Cruz as well.Mc Queen catches up to Cruz and convinces her to come along, and the two travel to Doc's hometown of Thomasville, Georgia, where they meet Smokey and several of Doc's old friends.Smokey reveals that even though Doc never raced again after his crash, he found a new happiness in training Mc Queen.After Lightning Mc Queen accepts that he will never be as fast as Storm, Smokey and his friends teach Mc Queen and Cruz how to drive smarter than Storm, with Cruz serving as a sparring partner for Lightning.
Mc Queen offers a deal instead – if Mc Queen wins the first race of the upcoming season in Florida, he can decide when he retires; otherwise, he will retire immediately.
The first movie was about Mc Queen, and the second movie was a sort of off-ramp to the Mater story. When we looked at what would be next for him, we wondered what that would be like both as an athlete, and also for what he was dealing with in the rest of his life." On January 5, 2017, it was announced that Armie Hammer and Cristela Alonzo would voice Jackson Storm and Cruz Ramirez, respectively.
Two months later, Nathan Fillion, Kerry Washington and Lea Delaria have joined the cast.
In a post-credits scene, Mater, at his junkyard, tries to answer an incoming call from his phone.
Somehow, he accidentally touches his reception antenna and his phone goes dead, much to his dismay.
Upset, Cruz reveals that she had wanted to race professionally just like Mc Queen all her life, but never started a race, because she felt outclassed.