I like that bison have a speed bonus for wagons. It makes the game more interesting if there are different optimal mounts for different things. Unfortunately, the speed bonus isn't enough to make bison on wagons faster than well equipped horses and hell horses, which makes the wagon speed bonus a bit pointless. I suggest we either allow bison to be equipped with horse shoes and saddles, or increase their wagon speed bonus so that they're better on wagons than equipped horses and hell horses. If none of this is going to be done, the speed bonus may as well be removed, as it's a little pointless otherwise.