Oh, yeah. That’s intended. If you look at the APC’s status screen you’ll see that it’s walls are made out of Heavy Duty Boards, these coupled with Heavy Duty Frames, and Military Composite Armor make the APC by far the toughest vanilla vehicle you can find in the game. The only issue with all that protection is you can’t see though Heavy Duty Boards (unless you’ve got a rare artifact) so you can only see out through the single Reinforced Glass Windshield in front of the driver’s seat.
There are a couple ways you can get around this though; a camera system along with a couple salvaged cameras from those robotic street sweepers can work wonders for viability, just replacing the heavy duty boards with quarter panels also works, putting in a regular driverside and passenger door can both let you see out the immediate sides of the vehicle and let you hop out whenever you want instead of having to climb out the back, you can put some rear view windshields in to better see out the back.[/quote]
Cheers. I’ll stick to my armoured car for a while then. Till I sort the cameras for the APC thing out 
Trying to recall if we have a port that can be opened and closed to see put at will, like on a tank.
Aye, that would be interesting. Like in Red Orchestra: Ostfront, where you can either stick your head out for better visibility (before dying from lead poisoning) or look through a viewport, thus being more protected but having a limited view.