Is 2GB enough on a head-unit for Apple Carplay?

I was looking into getting a new head unit for my car. I found this one, but I want one that has a physical turn knob, and this is the only one I can find. However, it only has 2GB of ram. How important is the ram on the head unit when using Apple Carplay?

I also see that it says it has 32GB of storage. What would this be used for? What am I storing on the device when it's just used to display Apple Carplay?