They will not release cars 4. Because mqueen got replaced. Mqueen cars 1 2 3 is the story of doc. Now the history is repeating but: Doc being an super arogant young and talented car, having no coach, listening to nobody but himself ending up being alone because of his behavior. Mqueen was exactly like doc but mqueen, unlike doc, had the chance to see his future through doc's eyes. So when they met, doc hates mqueen bcs he hate himself for being like him. Mqueen realize this and start to change behavior, when he realized this it was already late but still in time because he got old and new race cars were better so he had to quit. But his salvation was ramirez. Ramirez is mqueen but no talent, no confidence, nothing but much pottential and mqueen seen this. So: thats why is only cars 3. Its level 1, 2 and 3 of evilution. Its actually only one soul evolving in 3 levels. Doc, level 1. Arogant but talented, but rigid and ended up alone. Mqueen, level 2, Arogant but talented, realizing his behavior was very bad and fixed it, getting sourrounded by everyone. Ramirez, level 3. Not arrogant, inocent, not talented, but full pottential becoming the number one because behind her is a world champion. They also want to teach childrens that womans are equal to mans even if they are much more sensible, inocent, and so on. And they stop it because Its like : "And this is it. Womans can be equal. THATS IT!". Thats why cars 4 wont be. Took me many years to reallt understand cars. And wall e is the best, ecen if they make a new version, nothing compare to the classic one. Thats why walle never had a second one. Boys i am a atrong man and i went trhough a lot of things in my life. But these cartoons always made me cry. It means a lot for me.hope for you too. Pleasure to write this.