Using their multi tool, they removed the fender liners (wheel well liners) from all 4 wheels, the trunk side trim (luggage compartment side trim) from both sides - all of which just has plastic push-pin scrivets (retainer clips). They broke 5 of them.
They folded down my back seats (after removing all my personal items out to the shoulder in the rain), then unbolted and removed the back seat.
I do a LOT of interstate driving, and it is not at all uncommon to see this happen.
This is not the only time I have been in situations where authority has been exceeded. My attitude is to generally be cooperative (without giving consent) as my experience has taught me that is the most painless way to go.
A good many cops (maybe not >50%, but a very significant percentage) carry a pretty decent ad-hoc toolkit in their vehicles. There's often a toolbox with screwdrivers, socketry, pliers, some wrenches, maybe a hammer and/or other basic handtools.
It's pretty common for folks who know how to use tools to keep some on-hand, and cops are not an exception.
[1]: Yeah, so... I should probably explain that part. Some of my work involves 2-way radios, and some of that 2-way radio business has lead to me putting radios and stuff into things like cop cars. I've emptied out hundreds of cop cars to get access to what I need, and have certainly climbed into the trunk of dozens of them to be where I need to be. (Someone has to do it, and sometimes that person is me.)
I rear ended someone with a tow hitch, busted the rad an AC condenser and the shop wanted $300 to fix it (tells you how old I am).
I replaced them myself and I still remember the list of tools I needed - slot screwdriver, cross screwdriver, pliers, 10mm socket on an extension on a ratchet.That's it.
this gave me a bit of a laugh as my initial read had me imagining you being shoved into the trunk vs having dug around to see the contents.
Sorry about all the broken plastic on the trim -- That's also very familiar...
In my 40+ years of driving, I've seen such disassembled cars along the road a hand full of times.