Easter egg: In the normal DVD version of Cars, be in main menu and have 'set up' highlighted. Watch the bottom right hand corner. When the logo for Dinoco appears push right and select it. A short part of the animated short 'Bounding' will appear, except that Mater and Lightning are used instead.
Easter egg: At the main menu choose Hibernate. With your DVD remote enter 6 then 9 then 5 and press enter. Two new choices appear, a basic game for kids and a rather funny song with Hammy the Squirrel called Jingle Burps.
Easter egg: 3 easter eggs on German edition (G-41088-ST-FSK): one concept shot of objects, two fully rendered but dumped scenes. Elements of these scenes have been used in the final movie, but at another time and place. 1) go up in the main menu to highlight 2) go up in special features -> activities (Extras > Spiel mit!) 3) go left in the language selection.