@The Real AV Guy There are Android boxes that you can get on AliExpress, and other sites that essentially act as Android Auto/CarPlay transmitters, but give you full Android access on the car screen. You can download YT, Netflix, etc. from the app store, and stream whatever you want. I don't know of anyone here who has tried such devices, but they've been posted about before. Unfortunately, many people are selfish/self centered and want the ability to watch videos while driving, at everybody else's expense, so those threads devolve into a safety discussion. Nobody seems to bring up these devices to use strictly while stationary. I'm planning to get one myself at some point to use while charging. I will post about it when I do.
If you decide to go that route, make sure to get a device that communicates wirelessly. The i4 does not support wired Android Auto/CarPlay! Many of these devices are used to turn a wired connection to a wireless one, so they only support a wired connection to the car, and allow you to connect your phone wirelessly to them. This causes a lot of confusion in marketing, etc. You need to ensure that the device connects to the vehicle wirelessly, or it won't work with the i4!