I was driving towards the West Gate bridge from the city when I could hear a reasonably loud dragging noise all the way over the bridge. Pulled off at williamstown road and I could hear the noise all the way till I stopped.
Jumped out to have a look underneath, the car and couldn't see or smell anything. Under the hood nothing. Took it for a test no noise. Got back on the freeway and it started again. Pulled over again, noisy till I stopped, looked for something again and nothing. Tested again, seemed ok. Drive 20kms now and it hasn't happened again.
WTF HAPPENED.......????????