In the letter, a presidentially official-looking eagle spreads his black wings in the round gold logo that says "Automotive Stimulus Package." Yep. Gotta be the feds.
The letter begins with a thing that looks like a stamp: "APPROVED AUTOMOTIVE STIMULUS PACKAGE."
Then it tells me that a certain Chevy dealer particularly needs my year of a certain Chevy "and our managers have been authorized to buy back your current vehicle."
If I agree to buy a new car or truck from these guys, then they'll look at my car and make me an offer on the used car.
In other words, it's business as usual at a car dealer. Trade in a car on a new one. In still other words, the implied connection with the government is phony, aimed at gullible people.
In even further other words, this kind of promotion is one of the reasons some Americans don't sympathize overmuch with car dealers.