I was looking for a prison cart model and couldn't find one so I tried to do my own.
Made from the ingame catapult, horse and cage models.
The model is probably not perfect as I'm not really experienced with animated model but I think it can be useful for some people.
Changes made. Works in-game. Approved!
A little bit suggestion though, the model may be moved backwards so that the horse is at the center of the origin/pivot point. This may fix the 'stiffness' when the unit make turns in-game.
Yes thanks for remind me, I posted the wrong model for the animation and I just discovered that the collision boxes were buggy (thanks to GeneralFrank) so I switched for spheres and recalculated the extent and tested in game, seems ok now.