You do always have to keep in mind, this unit is half a Raspberry Pi Zero (not even a W wireless model) in terms of CPU power, AND also in terms of available RAM. It's basically worse off than the lowest model original Pi. It unfortunately can't do much more than it's already doing, but I do have a VNC remote desktop client working on it.
And I've made a custom USB WiFi adaptor for it:
Which also gives you root terminal access... and it all works, mostly due to a massive work around in what I think is a bug in the WiFi chip, which the manufacturer isn't admitting to.
Even though it works (with the work-around) I'm not promoting their product in any way until they supply more information on the issue - so I can be sure the work-around is totally safe. But it seems that may never happen.
This does let you run a super powerful Pi 4 in our cars, controlled from the touch screen.