We love the spam calls warning us that "the extended warranty on your automobile is about to expire!"
If I wanted to waste my time (and theirs), I'd actually talk to them, and after letting them go through their baloney spiel, ask which vehicle's warranty is about to expire? The 21 year old truck with 205,000 miles, or either of the two 16 year old vehicles with over 155,000 miles?
My wife asked one of them which vehicle one time, and after stammering for a moment, the scammer said, "Uh, the Chevy?" She said, "Nice try," and hung up. We've owned one Chevy in our lives, and it was too old for a warranty when we bought it (and that was over 30 years ago now).