I’ve had two cars with ACC and one, 2017 Honda Accord Hybrid, I didn’t like ACC. It was not refined enough to use in semi-congested traffic and occasionally it panic braked on winding two lane roads but the ACC in the ‘19 Mazda CX-5 is much better. I recommend it. It can adapt to whether or not cars ahead are slowly decelerating and closing the following distance or slowly accelerating away and it has never mistaken a safely approaching vehicle for a threat. After the Accord I wasn’t a fan but the CX-5 has changed that. Now I miss ACC on the RT and Goldwing.