After taking it on a couple of longer drives, it revealed some new issues that were due to the adapter unit, so I can't recommend it. Sometimes it completely loses connection, but that's rare. The worse problem is when it maintains connection, but it doesn't update the screen, it just hangs. This isn't great when the item on the screen is a GPS route map, and you miss a turn because you thought you had a ways to go yet.

When the hang happens, I can tap back to my car headunit's "home screen" and select "CarPlay" again, and I see an updated/refreshed screen that's working fine again... for a brief minute, then it hangs/freezes again.

This doesn't occur when I connect with the lightning cable, it only happens with the CarLinkIt unit. So I think it's a hanging bug or protocol bug in the unit's firmware. It's supposed to be able to update its firmware, but every time I go to its web interface menu and press "check for updates", it says that the software is up to date. So we'll see if it ever gets updated. Until then, no bueno.