An automobile club, somewhat like AAA. They offer both normal automobile insurance and a separate membership in the Straßenwacht where they show up when your car breaks down. If they can't fix it on the spot, they'll tow it to the next repair garage which will fix your brand. If you sign up with their premium policy, they'll tow it back to your home
Ah, got it! That's typical they use Type 1 VWs, because not much would need to be carried to fix a car on the spot.
Nothing like basic transportation, as a back-up for one's favorite ride, when parts need to get fetched or something