2 weeks ago, during my trip to South Africa, I stayed bike fit by borrowing my niece's tri bike. Once while riding a 2 lane each way main road, I got a huge fright when this earsplitting cacophony broke out directly behind me. Purely out of instinct I jerked the bike off the road onto the coarse gravel shoulder, only to see a police car drive by, officers laughing heartily! The idiot had just briefly turned his siren on on the "rapid" setting.
As aggressive and rude as Melbourne drivers may be, I really appreciated them after experiencing Pretoria clueless drivers for 2 weeks. Every single person I talked with warned me about the road safety, most thought I was taking my own life. I once saw a girl crashing after a clueless driver bumped into her while talking on his cell phone. She was not injured.