Posses and Control a Pawn at the same time?

How can you Posses and control a Pawn at the same time?

“For example the character is driving the car but you by default control the car I have to posses the driver
to play the driving animations.”

How do I do this? im having a hard time.

You could just pass the input events from your character to your car with custom events.
You also could just posess the car and control the animations from there.