-Xenus 2 - White Gold
Cataclysm: Dark Days Ahead
Zombie survival game.
You get to design your vehicle.
There is a detailed survival mechanics.
You could live like a hobo and turn your vehicle into a mobile home.
Open world.
Able to exit vehicle.
Also:
-Build foldable vehicle (motorbike), store it inside the base for agile exploration, you just need to mount the wheels to ready it.
-Want a greener solution? Carry livestock inside your mobile home. Find a good parking spot and explore on horseback.
-Add flotation part to turn it into an amphibian vehicle and explore rivers/islands.
-Use drive-by-wire and remote controller. Ambushed by an horde during exploration? Have your "car" come and save you.
-Use cameras and window screening to be completely invisible to anyone outside. Everything is automated and centralized, obviously.
-Have enough floodlights to turn night into day in an half a mile radious.
-Realize you went overboard when you installed those 12 tanks, since the fuel from 4 (240L) is more than enough. Raid a liquor store and get enough booze to last you untill the end of time, which isn't far anyway.
The one minor problem of vehicle in CDDA is diagonal limitation, but can't find a better vehicle game with better survival details.
In CDDA that scene is gameplay and Dead Reckoning is a vehicle that has internal space for you to enter and comes with all the functionality.