...and put your device in "dev board mode", which loses all homologation and puts the vehicle into safe space.

and as per the slide deck this may be a one way operation, creating a brick in the driveway.

I know the slide deck. I've asked automotive oems to think about a dev mode which does drive, but puts the whole car into a dev mode and makes this obvious. too expensive. just kick out gpl3 from anything relevant to homologation.