Marcus Aurelius Canônico of Folha de S. Paulo described The Little Cars series (Os Carrinhos in Portuguese), a Brazilian computer graphics film series, as a derivative of Cars. Canônico discussed whether lawsuits from Pixar would appear. The Brazilian Ministry of Culture posted Marcus Aurelius Canônico's article on its website.^[26]

It has also been noted that the plot of Cars bears a striking resemblance to that of Doc Hollywood, the 1991 romantic comedy which stars Michael J. Fox as a hotshot young doctor, who, after causing a traffic accident in a small town, is sentenced to work at the town hospital, falls in love with a local law student and eventually acquires an appreciation for small town values.^[27]