Yes, absolutely. The same law that provides for banks reporting deposits and withdrawals over $10K also puts similar requirements on retail establishments that accept payments that large.
Although in practice they're probably buying a $9k salvage truck in cash, then paying mechanics in cash to fix it up to be a $75k truck.
The same thing happens with houses. Someone buys an absolute dumpster fire in cash. Then they pay contractors to fix it up nice, beautiful appliances, tiling etc. The house gets sold and the money ends up all in the white.
IDK. The bank reports that the J. Random Chevrolet dealer deposited $75,000. The bank doesn't know where that came from. They don't know if it represents 75 $1,000 cars or one $75,000 car.
I used to work at a restaurant that regularly deposited more than $10,000 cash per day. We never filed any IRS reports for that, maybe the bank did.
I bought a car a few years ago half cash, half financing. The dealer sent me a letter stating that they notified the IRS under their obligation to report cash transactions over $10K.