From Google: You can decide to disable entirely the autoplay policy by setting the Chrome flag “Autoplay Policy” to “No user gesture is required” at the URL below. This allows you to test your website as if user were strongly engaged with your site and playback autoplay would be always allowed.
chrome://flags/#autoplay-policy
Another approach
With the auto club notification dialog showing:
Click on the “lock” icon just left of rangersst.com/autoclubnotification.htm and you should see a screen somewhat like this: