That bus, JLJ 823, (doing the CW3) is actually a City Tram bus
services started by Handal Indah. In particular, by looking at the
picture, the bus was designed to represent a Malay traditional hut
or so called the Malay village house.
You can find those buses plying on both City Tram routes, one from
from Johor Bahru to Plaza Angsana (via Danga Bay) and loop and the
another, Johor Bahru to The Store Shopping Ctr and loop