The Speaker ranks fairly highly in matters of protocol where the position ranks with The Governor General, State Governors and The Prime Minister, all who are entitled to a car with a flag of sorts. The matter of privilege is part of the Left's class warfare program and seemed forgotten during the Slipper reign when all accoutrement's were de rigueur. I'm unsure if Bronwyn flew business or cattle class though. I wonder if she has kids?
Infosheet 3 - The Speaker ? Parliament of Australia