What on earth (or even off earth) is the gunner firing at? He must be firing blind. Ah ha I have it! (eureka). Given that the driver appears to have no vision slits this must have been an armoured car designed for clairvoyants. I have seen other designs for teleporting crew (no doors) - beam me in Scottie. Mind you the famous architect Corbousier once designed a monastery that had no latrine facilities whatsoever (now what kind of tele were the monks capable of ?).