I bought this 2019 Challenger R/T used with 7,000 miles. It did not have an engine cover. It Had invisible blemishes on the side. The good was slightly displaced which was concerning, but I only noticed it after it was sold to me. The only previous owner was a rental company. I noticed the lights were moving up and down while I was driving and tried to find the culprit, when I did I was a little astonished. Do you know what could have possibly caused this?