The good Departure from the Buddha from Kapilavastu. A royal figure in the chariot drives forth from a city gate, by using a horse in front. The scene is analogous to your scene of Buddha's departure from Kapilavastu about the East Gateway, but in that circumstance there isn't a chariot, https://rafaelshtbj.angelinsblog.com/29531510/sailendra-dynasty-buddhist-temples-no-further-a-mystery