2015 Dodge Challenger RT Shaker... As I was cruising down the highway on my way home from work I heard a bolt or nut fall out from under my car and bounce off the road and hit the bottom of my car in the rear. I also heard a different sound in the rear like a "ping", similar to the sound a wrench or rod would make if you hit it on something else metal or hard, at the same time I heard the bolt or nut bouncing. I was pretty sure I didn't run over anything because I was watching the road. I looked in the rearview as soon as I heard it but didn't see anything. I didn't pay any more attention to it since it didn't seem to be serious and didn't think it really came from my car because it didn't seem to affect the way my car was driving. No vibrations or wobble or pulling or anything as I cruised so I figured I just ran over a nut and kicked it up and just didn't see it coming. I stopped at the store and got a drink. When I got back on the highway and accelerated, my rear passenger wheel area made a God awful noise, almost like my exhaust had a hole in it or came unbolted. It didn't make sense because it quit as soon as I let off the gas and I even put the car in neutral and revved it up and it sounded normal. I put it back in gear and gave it gas and it made the noise again. I also noticed that when I accelerated the rear of my car would pull to the left and the front would pull to the right and it would stop pulling when I quit accelerating. I stopped and picked my husband up from home and showed him what I was talking about. He was watching the rear passenger wheel from the passenger seat as I drove and every time I would accelerate he saw that the rear passenger wheel would turn inward, like toe in excessively (to the point you can see the face of the rim in the side mirror), making the rear of the car veer left and the front of the car veer right and when I apply the brakes or make a turn, the rear wheel would turn outward or toe out excessively. The harder you accelerated the more it turned in. So yep, I realized that bolt or nut and the pinging sound was from me and something really important had probably just came loose or broke in my rear suspension. I don't think the rear driver wheel is moving like that, just the rear passenger wheel. It makes the rear end feel super loose and I feel like if I were to floor it, my rear passenger wheel would turn completely sideways and twist off. The wheel assembly itself is not roaring or grinding and that horrible "no exhaust pipe" sound I was hearing was actually the wheel rubbing the inside fender well as it turned inwards on acceleration. When we got home, I kicked the wheel forward and made the car roll forward some and it clanked. When I kick the wheel inward it has give and it clanks. My question is what was that bolt holding together? Rear toe link? Stabilizer bar? What could have possibly happened? Could it have been caused by anything besides the toe link coming loose? I'd like some ideas of what to look for before I jack it up. My husband is a heart patient, he just had open heart surgery in October and both of his shoulders are completely destroyed so it's up to me to fix it, with his guidance of course. I have to work Monday and it's my daily driver so I hope I can fix it fast and without breaking the bank! Thanks in advance!