Horse drawn wagon/carriages

Essentially a uniqe textured boat drawn by horses. Drawbacks would reduce horse speed (1/4-1/2?) and remove jump while mimicing height and width of full grown horses. Features: could have up to 2 chests placed in the back, could also picks up mobs like a boat (better villager transport) but with the height would require utilizing 1 block height/staircases to get mobs into the carriage. Wild idea could be using 2 horses to maintain a typical horse speed but doubling the width of the hit box. Requiring lead(s), logs, slabs, maybe wool/carpet if there's a Conestoga look