Horse-drawn carriages are set to feature in Red Dead Redemption 2 and will fulfil a similar transportation function to what they did in the previous game.

Description
NPC-controlled carriages can be found on roads and highways across the map, and Arthur Morgan can hijack these vehicles as needed. It is unconfirmed whether or not doing so will net any particular rewards.
Carriages will also be available from towns and settlements as a fast travel mechanic, allowing Arthur Morgan to mount up and be taken instantaneously to another location on the map. It is possible that doing so will cost a small amount of in-game currency. As Red Dead Redemption 2 features a map that is significantly larger than that of the previous game, it is likely that players will have to rely on fast travel more frequently than they have in the past.
Gameplay
Carriages can be stolen by Arthur Morgan and either used to transportation or taken to Seamus at Emerald Ranch, where they can be sold off for some money. Carriages also appear in several missions where they need to be robbed, stolen, or simply boarded and driven.
Carriages work in a similar manner in Red Dead Online, but have more uses. They spawn randomly in the game world and can be robbed or stolen. As of the Frontier Pursuits DLC, Carriages may also be purchased by players who have unlocked either the Bounty Hunter or Trader Role, and level up sufficiently to unlock the perk.
The Bounty Hunter Wagon becomes available at Bounty Hunter Rank 10, and costs $875 plus 3 Tokens. It allows players to secure bounties, preventing them from escaping.
The Hunting Wagon becomes available at Trader Rank 10, and costs $875 plus 3 Tokens. This carriage allows for the transportation of 5 large carcasses or 10 small carcasses.
The Medium Size Delivery Wagon becomes available at Trader Rank 5, and costs $500. This allows for the carrying of 50 goods.
The Large Size Delivery Wagon becomes available at Trader Rank 10, and requires the ownership of the Medium Size Delivery Wagon. This carriage can carry 100 goods.