Open hardware, upgrade car cpu, gpu Open software. Linux dashboard.
So instead if your car becoming like an old smartphone on wheels. With opensource It would become upgradeable.
CarITX HDMI for car display.
Cars are unlikely to go full open source, as there are safety requirements and so security by obscurity is a part of the plan (not the main part, but a last ditch prevention). ThThey will open source less critical parts.
And you know VW won't want you turning off location tracking, or enabling some functionality you didn't pay for...
So again, I doubt it will be as envisioned.
Well E3 1.1 (The VW "os" that's in id3/id4/id5) runs infotainment on top of linux.