The idea is to walk and get to the car and when I press the E key you can see the inside of the car in first person too.
Here’s a tutorial 
Thank you for responding so quickly, yes I have already seen this video, but my question is to go from first person to pawn Car and take the controls of the Car, by pressing E I can enter the vision of the Car but I can’t control it? The posses does not work, could it have something to do with the Car inputs?
Here’s a tutorial on switching characters as well:
You can implement a similar thing for your use case.
About the possess node not “working”, what do you mean by that? Can you possess successfully but cannot control the new character or does it never get possessed at all?
Regardless, make sure you have everything set up correctly as shown in the tutorial.
Hope this helps! 
Thank you very much, any help is good, I mean that I have a perfect view of the car, but when it comes to driving, the W S D A commands to go front, back, etc. They don’t work, and I also want to type E again and exit to first person mode.
I send an image of the construction of the Pawn Car possession
Are you assigning the mapping context after Event Possessed and connecting actions to Input Actions in the car’s blueprint as well?
I suggest checking out the tutorials that I provided in my previous posts.
Thank you, I will look at them carefully to see if I missed anything, I am not an expert and it already worked for me in unreal 5.3 but not in 5.4