Can i Give elivation to car(to fly) using RCC V2 unity

I am using Realistic Car Controller v2 to create a Flying Car game. I want to give some elevation to the car as it speeds up, so that i could fly. but unfortunately i could not find exactly where should i do that in the CarControllerScript.

I can fly that with a separate script but it did not look Realistic.

I have also tried changing these lines in the CarControllerScript as shown in the ScreenShot.

This is my first car game, i would really appreciate if someone can help me or guide me, Thank you