[sokoloff]

Start with “I have 60 minutes to conclude this deal [90 if for some reason you need to test drive it]” and start packing up your things at the 55 minute mark.

If you spend 3 hours at a dealer after you’ve identified a single car you’re interested in, part of that is on you.

Yes, I’ve walked out twice. One dealer rescued the deal; the other lost the sale to a dealer about 20 miles away.

[TreyGuy]

ive easily waited an hour just to have a trade-in valued. this is part of the deal since you wouldnt land in the finance office until your trade in is valued.

[rdtwo]

Doesn’t work when someone else will happily buy it

[sokoloff]

Someone else will always buy any new car. They are not nearly so likely to buy it from that specific salesperson and so that salesperson's commission is still very much at risk, even if the dealership is at zero risk of being stuck with the car.