Loud squeaking sound
 

I was driving home this afternoon and I started hearing this loud noise coming from the back which sounds like a belt or a belt pully. It lasted for about 5 to 10 seconds and then it was gone and I never heard it again. Actually, I'm not even sure if it was coming from me or from another car near me on the freeway but I sort of got spooked by it. Any insight, advice or suggestions will be highly appreciated. Thanks!

maybe it was that big signature being dragged on the ground making noise hehehe