Don't say "I'm Paying Cash" at Car Dealerships

[ford man xf]

When buying a new car are the days of paying cash and getting a better deal gone? I came across an interesting video on YouTube, I know its in the USA but it does have some good points about negotiating a good deal with the dealership and not mentioning that you will pay cash.

It's basically arguing that now finance rather than cash will get you a better deal with the dealership? Is it better to just get finance and pay it off super quick?

Is there any good tips from new car buyers on here that worked for them?

Heres the video: https://www.youtube.com/watch?v=gLxVyeFmod8