Around here, new inventory on just about anything popular is still scarce, and the dealers aren't negotiating. I just went to my Toyota dealer for service, and almost all the vehicles on the showroom floor were used. I talked to a salesperson, who I actually like, and she said they have waiting lists for which a $1000 deposit is required. Take it or leave it. Similar experience at the Honda and Nissan dealers. So I am skeptical that the old negotiating tricks still work.
Then, every month or so, they send me a postcard that tells me exactly what they estimate my car is worth as a trade-in.