Hello Scotty and friends, I have a 2016 Toyota Corolla that has a subtle rattle/creaking noise that increases with speed sounds like its coming from somewhere inside the dash. It sounds like loose plastic or sunglasses rattling around and is audible starting at around 40 mph and increases with speed. It can hardly be heard at 30 mph or below but is very noticeable at highway speeds, especially 60 mph and above. I removed all of the front dash/panels/vents and drove around as a complete skeleton but I could still hear the noise and was unable to find out what it was. Before putting everything back together, I also lined everything (including the dash and the floor carpet) with soundproof insulation foam but I can still hear the noise after that. I took the car to two mechanics, both of which could hear the noise and confirmed it was inside and nothing to do with any outside or mechanical components (I came up with the same conclusion). The dealer wants $198 just to look at it, which isn't gonna happen. The noise is really driving me crazy because I'm an Uber driver and do a lot highway driving. Other than that, the car pretty much runs and drives like new, absolutely no issues mechanically (it has 147,000 miles). We also have a 2014 Toyota Corolla with 127,000 miles and a 2018 Toyota Corolla with 171,000 miles (same generation) and neither of them make this noise. Help!