The gamepass Royal Carriages costs 
1499 and provides three Legendary Carriages upon purchaes, specifcally giving the Princess Carriage, the Prince Carriage, and the Golden Royal Carriage.
How to Use
1. To use your carriage, equip the item from your inventory, it can be found in the Vehicle section of your inventory, then left-click it.
2. After you are driving, you can control it by move joystick/WASD/front, left, right, back arrow to change the direction of your carriage. In order to stop driving, you can press the jump button.