So I'm heading over the westgate bridge today and it's pretty windy, so I'm hanging on tight. In my lane, right in front of me there's a guy in a BMW X5 SUV towing a bunnings trailer with a mattress in it. I thought, probably don't want to be behind that in case it blows out. Changed lanes and a matter of seconds after I vacated the lane, massive flipping (literally) mattress flies right by me. If I'd not changed lanes, I'd have been taken out for sure. Scared me somewhat but am pleased my hazard perception sense did it's job and I'm not a smudge on the road. Phew!