I received this pic and theory from an expert in the field, who messaged with:
Where is this piece of Teresa's Rav4? A wheel well cover is not small. Is it maybe in the quarry or right outside the salvage yard? You would not be able to see through the missing front left blinker (was found in the trunk) if the wheel well cover was still on Teresa's car.
My theory is the car was towed onto the back of the Avery lot through the quarry with a tow strap. While being towed it bumped into the back of the vehicle towing it, smashing the front headlight, knocking out the blinker light and loosening the fasteners on the wheel well cover. Whoever is towing stops, picks up the blinker and throws it in the back and goes on their way. While towing Teresa's car through the quarry (directly south of the Avery lot) the bumpy/hilly terrain wiggled the wheel well cover loose and it fell off.
I believe this wheel well cover could possibly still be on or around the quarry property directly south of Avery salvage.
This video shows how the wheel well is held on:
The plastic screws/clips break very easily in low speed front corner hits. I know from first hand experience how easy the wheel well cover can fall off. They break loose just a fastener or two and the weight of itself pulls it down into the tire, which then rips it off.
Pic below: Note the quarry sand and wheel well cover peeled back, suggesting a tow:
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Tags: steven avery, brendan dassey, ken kratz, manitowoc, len kachinsky, robert hermann, teresa halbach, jerry pagel, calumet county, jerome buting, makingamurderer, dean strang, michael o'kelly, mark wiegert, rob herrman, sherry culhane, jerome fox, tom fassbender, manitowoc county sheriff's office, teresa halbach, michael griesbach, the innocent killer