Okay, my solution for this is as follows:
My van is 4 tiles wide, it has a 4 tile windshield in front, as well as two side doors in front and two rear doors in back:
I have curtains installed on all 4 windshield tiles and all 4 door tiles, so I can close all the curtains for this result:
So when I am driving I can open the curtains to see out the front and rear of the vehicle, and when I pull over to sleep or craft and need privacy from zombies I can close all 8 curtains and be hidden.
Also pictured: the luxury RV that I used to add floodlights, water tank, and solar panels to my van.