How do you make sentence with the word sedan car?

You don't need to say "sedan car" because "sedan" already implies that it's a car. Here are some examples:

* "He drove a sleek, black sedan to the meeting."

* "The new sedan model boasts impressive fuel efficiency."

* "My parents bought me a used sedan for my first car."

* "The police officer pulled over the speeding sedan."

* "She traded in her old SUV for a spacious sedan."