i just copied this off my multiple suggestions post but oh well....
Catapault Vehicle: you hop in it and drive it but it goes slow and then you type something like /fire and it fires a boulder and you aim like aiming a gun
and
Seige Towers: A tower used in seiges for Castles once again like a vehicle but slow but slightly faster than the catapault its stability is medium and people can ride on the top and then when they get near the castle the driver can type /drop and the platform opens up and the people can walk over the platform and get onto the castle walls


and
horse with carrage: like the horse vehicle except it has a carrage that can hold 3 extra people in the back and jumping with the horse is disabled