please enlighten me, i drop my 2010 vehicle into N at the top of a long hill that i drive down a few times a week. If i keep it in D, RPM’s show 1500 at around 35 (the speed limit). In N, it idles at 800-1000. my foot is not on the gas in either case, but wouldn’t my RPM drop significantly - like, to zero - if fuel is…