Hi wicvk,
A good place to start with vehicles is on our documentation pages: How to Set up Vehicles in Unreal Engine | Unreal Engine 5.1 Documentation
To get into and out of vehicles, while I’m not certain of the exact systems, will require heavy blueprints. I would think that a vehicle pawn and a character pawn blueprint for the individual movements and utilizing the bone structure of the car to allow the player pawn to attach to the driver seat would be viable. After that it is primarily animating the player character to get into the vehicle and switching control from the player pawn to the vehicle pawn.