It seems they are sharing buses. And it's said that NICE is on short buses. They don't have enough buses drivers show up and there are no buses and have to wait until one comes in from service.
I wasn't sitting back there. Others also felt the full blast of heat that suddenly came about. The ac feels great sitting in the back of the 1700's/1800's! It blows great.
Most likely the AC went out on it. Was any cool air blowing at all when you first got on? I was on 1730 last Thursday the AC was blowing ok and all of a sudden heat started to come out!