[CaptainAmiigaf]

This article is confusing. Does the toll apply to-—
A. German driver of FOREIGN made cars (or)
B. Foreign drivers of FOREIGN made cars (or)
C. Foreign drivers of GERMAN made cars
My first thought was the toll was aimed at reducing the import of foreign made autos, increasing the use of home-grown vehicles.
Also wouldn’t toll booths checking passports really screw up traffic flow?

[FreedomOfExpression]

It is a toll on foreigners driving on German roads.
The second and third paragraphs after the one in bold help clarify it a bit.
It is a political move based on Germans returning from vacation in other countries, angry about having to pay usage fees or tolls as foreigners, while Germany does not charge those tolls to drivers from other countries.

[Charles Martel]

Also wouldn’t toll booths checking passports really screw up traffic flow?

Some sort of pre-paid windshield toll sticker could be displayed on cars with non-German license plates. A flat rate, paid at entry into Germany, seems more feasible than an electronic toll collection system.

If they already had an extensive toll road system, it wouldn't be that big a problem to modify it - for example, Brits can buy tolltags that work on French toll roads.