diff --git a/addons/cars/README.md b/addons/cars/README.md
index c1dad33c..4c812856 100644
--- a/addons/cars/README.md
+++ b/addons/cars/README.md
@@ -9,6 +9,7 @@ As a user, see transit and voyage modules to actually get civs driving on the st
 Attribute                | Default Value | Explanation
 -------------------------|---------------|------------------------------------------------------------------------------------------------------------------------------------------------
 animalTransportChance    | 0.4           | Probability that a suitable vehicle will carry some animals as cargo.
+animalTransportVehicles  | []            | optional list of class names whitelisting vehicles that are allowed to carry animals
 automaticVehicleGroupSize| 1             | Allow vehicles to be filled according to capacity, ignoring *initialGroupSize* (0,1).
 vehicles                 | ["C_Van_01_fuel_F", "C_Hatchback_01_F", "C_Offroad_02_unarmed_F", "C_Truck_02_fuel_F", "C_Truck_02_covered_F", "C_Offroad_01_F", "C_SUV_01_F", "C_Van_01_transport_F", "C_Van_01_box_F"]            | All classnames of vehicles that civilians may drive.