Those who want to enjoy Plex via CarPlay while safely parked, can download and enjoy my app which released recently that allows full Plex client in CarPlay!
The app works on all devices which support Trollstore:
Lots of people using and enjoying this already, so thought to share here in case useful for anyone else
Unfortunately you need Trollstore to sideload the app as it uses some special entitlements which apple wont allow (to get video playing on the CarPlay side).
Trollstore can work without a jailbreak, you just need the device to be on a specific iOS version which Trollstore supports.
Probably best to find a cheap device on a supported version and use this as your CarPlay solution!
You can read more about Trollstore here: