No there's no AC but sometimes nice decoration in India-style combined with the Music from India
its worth to do a bus trip at least once.
Well I made the experience with the buses that always when you wanna go somewhere very quick they drive as ud mentioned veeeeerrrrry slow- but sometimes they are really !!!! fast! especially if there's two buses behind each other
they always try to overtake the one on front to get the passengers.
I liked going by bus as its really verrrrrrryyyy cheap but you definetly will need time cause the buses stop nearly everywhere.
Only on some main connections there are Express-Buses, they dont stop that often on the way.