[Gasoline Fumes]

My 1991 Honda does it. I think most fuel-injected cars should do it. An easy test that works with a manual might work with an auto too. Manually shift into 1st gear and accelerate from a stop up to 3000 RPM. Take your foot off the gas and you should feel the injectors come back on around 1000-1500 RPM. My car will buck a little when this happens.

And idling in neutral will be more efficient if you're not trying to slow down. But yes, keep it in gear if you want to slow down.