Benslowinski

Hey guys, I was wondering if anyone has heard the noise thats on the video. It has only happened to me twice in two weeks in the morning. The sound is very very loud and i can feel it beneth the driver's side. I noticed when i was on the gas it was loud but when i let off it went away. After about 30 seconds it totally goes away. Sorry for the short video i'm not to savvy on making videos the right size. Thank you for any help