In Cars 3, Lightning Mcqueen is depicted as a veteran race car who tries to prove he is still the best racer in the world. He is old when compared to many characters.
Some cars even say that they have grown up watching him racing.
A retired race car Smokey says the dialogue:
You are old and not fast. You have to accept that.
He is shown older than many cars.
For human animated characters, some techniques like wrinkled skin, grey hair etc., can be used but such tricks are not be applicable to cars and vehicles.
Apart from dubbing voice, what are the other techniques followed by the animators and directors to show that Lightning McQueen has aged?
How can audience know that they are looking at an old car by looking at McQueen in Cars 3?