ok look - Core Web Vitals are really only important if you get crappy scores, or if you're talking about a massive website with millions of pages. For dealerships, the only time any of it will matter is if you're in the bottom 10% of all of the auto industry - that's when you'd be penalized. Otherwise, shaving off a half second or even a second of load time won't do jack squat as far as Google is concerned.
Like [USER=4695]@Ryan Everson[/USER] pointed out, page load speed WILL have an influence on conversions though - don't buy into the BS stats online about how much, but it's pretty obvious... If you have a page that takes 3 seconds to load well enough to interact with, chances are high that the customer will leave and go to another site.
But you also have to realize that dealers (and marketing partners) really don't have the ability to "fix" bad CVW/load times. It's always one of 2 things - either a poorly coded page (fault of the website provider), or a poorly coded third party plugin (fault of the 3rd party tool). If it's a plugin, you can pretty easily bail on it and find another, but on the website side, they're all pretty crappy... and they're not EVER going to make a code change to fix something for a single dealer.
So Bill - if this question was more about the Google/SEO side of things, your best (only) option is to work with an SEO partner who really knows how to maximize value
