Age of Darkness is a mod set in the historical period spanning the two world wars of the 20th century, revolving around the struggle between the forces of liberty, socialism and reaction.
Not all armoured lorries in Age of Darkness are worthless. For Falangist Spain and Britain, armoured lorries can be a killer if properly used, and in keeping with their defensive qualities,
The British get the M4 Bison which has more armour and a machine gun attack, but is even slower. The Falangists can upgrade armoured trucks to mortar trucks - same thing, but with a mortar-based attack which makes them into a primitive sort of self-propelled gun - far more effective against enemy infantry and buildings, but still just as awful if facing real tanks.