When I went to Rio de Janeiro, the transport was very good. We've used all possible kinds of transportation in the town , like : Subway , Bus , Car , even a strange bikes over there... The unique bad point was the fare... it was very expensive , but there was just one Bus that i loved , it was FREE! do you know what is FREE !!!????
Anyway... The most important point of this : The comfort , Oh my god , I felt I was in a spaceship... Very good.