Ahh, you found me... Run!
Can Caravan be moved by only Caravaner?
If we don't use Caravenr class card, Does caravan need to be placed on the map?
No, as per the rules. Page 2, number 10: "If the Caravaner class card is in play, the last player (...) places the caravan piece in a region of his choice on the board."