Re: Anyone else wonder...
Q - "Is this a free trade issue?"
A - Yes.
If Germany decide that they want this system implemented by law then all cars sold in Germany need to meet that law. Because you can sell products across borders without restriction (in theory) that means that any car for sale in Europe must meet the German standard.
Also, if Germany wants to introduce this kind of law, then it is not unreasonable to think that other countries would want to do something similar. if they all develop their own national standards then you will duplicate a lot of work and probably end up with functionally similar but technically slightly incompatible systems.
all of which need to be covered off in a new car design.
which makes it more complicated for the manufacturer.
which makes it more expensive for the consumer.
So yeah, it makes perfect sense for Europe to collaborate on this.