Not the case I was thinking about, but here is a similar case:

[translated] Parking in a stupid way can be expensive. In Frankfurt, the regional court has ruled that a car driver must pay for the use of 28 cabs.

[…]

The cabs collected people waiting at the stops and drove them to other stops along the route. This went on for an hour before the car parked not far from a “Please keep enough distance from the track” sign was towed away and the route was free again. […]

When the VGF then demanded 973.13 euros, 25 euros of this was a lump sum for their own expenses - and the rest was the cost of the rail replacement cabs. The court ruled out manipulation by the cab company after hearing witnesses, and the court was also unable to recognize any dilly-dallying during towing.

The car driver did not have any legal grounds for not paying for the cabs, this only went to a court because they tried to accuse the cab company.