Season 7, Episode 14: "The Cadillac"

-He's not buying us a Cadillac. -What are you, nuts?

This is a very nice gesture, Jerry, but take it back.

Can you believe this?

I'm not letting him buy us a Cadillac. He hasn't got the money.

-How do you know? -Oh, get out of here, Mr. Big Shot.

Why can't I buy my father a car?

-Your father doesn't need a car. -Yes, I do.

-Oh, Morty. -We're keeping it.