So I'd been hearing this strange sound coming from the rear of my car for a week or two now. For a while, I only heard this strange knocking when I went over bumps, so I thought it was just something shifting in the trunk, though it sounded a bit different than that. But then I started hearing it as I started the car. I looked around back there and didn't really notice anything. But then yesterday, I got a good look under there in decent light. The little strap holding the muffler in place had snapped. Yay. So I took it to Midas yesterday and was informed that I really should replace the muffler. After having a look at it and seeing how rusted it was, I couldn't help but agree. Unfortunately, this also required replacing a large section of exhaust pipe, too. I can't even begin to tell you how overjoyed this made me. Ah well. Hopefully this'll be the last major car repair for a little while, at least.