This is how the post credits scene goes in Jay Jay's Adventures of Cars 2.
Ryan F-Freeman: I think I got a letter from Haru.
Crash Bandicoot: Who's Haru?
Ryan F-Freeman: Some character from some cartoon. I don't know.
Sci-Ryan: I think she is a girl from a film called "The Cat Returns". If Jay Jay see you, would you be a... a...
Ryan F-Freeman: A cat?
Sci-Ryan: How did you know?
Ryan F-Freeman: Seen the film.
Evil Ryan: What will you look like as a cat, Ryan?
Ryan F-Freeman: Well, I'd obviously have all the features of a cat.
Sci-Ryan: And us? I think I would be a real smitten kitten with the inhabitants of Haru's world.
Sci-Twi: Ahem. [gestures to Sunset]
Matau T. Monkey: He means he will be a real cat.
Sci-Twi: Oh. Anyways, what does the letter say?
[Ryan looks at a letter and starts to read]
Ryan F-Freeman: Dear, Ryan F-Freeman. I have know about you and your tales on your adventures and I was wondering if you and your allies come to my world. I hope I can see you in person when you arrive. From Haru.
Red (Angry Birds): Does Haru got a last name?
Ryan F-Freeman: Yeah. I'm just not sure what it is.
Sunset Shimmer: Anyways, aren't you gonna send a message to Jay Jay?
Ryan F-Freeman: Oh, right.
[He picks up a pencil and starts writing on a piece of paper]
Ryan F-Freeman: Dear, Jay Jay. I, Ryan F-Freeman, Prime-prince of friendship, have decided to go to the "The Cat Returns" world. But, I was wondering if you and your friends want to come with us. Matau and his friend, Starscream from Transformers: Cybertron, will be waiting for you when you get there. From Ryan F-Freeman, Prime-prince of Friendship.
Crash Bandicoot: Nice.
[Spike rolls it up and blows on it, turning it into a swirling mist of green flames]
Matau T. Monkey: So, Starscream? Wanna go see Haru?
Starscream (Cybertron): Yeah.
Ryan F-Freeman: Let's hope Megatron won't kill us or turn me into a swan.
[Starscream transforms to Jet mode and flies off with Matau, who has gotten in the cockpit as the film ends]