content: I would say I can't believe nobody ever thought of this during coding but I would be lying.  Firstly, very few devs have experience in production at all so they don't really understand how things are really used.  Second, they were probably from India and didn't care anyway.  It is very easy to see that a car from a company that sells for fleet usage would have this issue.  Why not add guest portal style access to it?  Every 24 hours you have to re-pair the device or you lose access.  Tada.