I know this is a little old, but i wanted to add to this. There is also a tutorial specific to entering and exiting vehicles here: https://docs.unrealengine.com/latest/INT/Gameplay/HowTo/PossessPawns/Blueprints/index.html
I know this is a little old, but i wanted to add to this. There is also a tutorial specific to entering and exiting vehicles here: https://docs.unrealengine.com/latest/INT/Gameplay/HowTo/PossessPawns/Blueprints/index.html