Very sad for the classics, it was for the show effect and to cause fear at the tax evaders.

The German government and tax-authorities try to make money with such illegal cars.
You find them here:
https://zoll-auktion.de/auktion/auktionsuebersicht.php?katid=191&erste_seite=ja

Among former authority cars you find vehicles and any other stuff there, confiscated by the customs administrations or courts (not only financial courts, also seisures by criminal tribunes.

A time ago they had also such a classic Corvette in their stock, plus a collection of Harley Davidson motorcycles, confiscated at a red light district king.
More often you will find poor devil's cars there, as 20 year old Opel Astras "unknown condition, no papers, no keys, loaded with garbage, minimum bid 20 Euro"
Maybe this example
https://zoll-auktion.de/auktion/auktion.php?id=560632
will not reach the 150 EUR. "Vollstreckung" = enforcement/confiscation

anyone for a Saab 9-3?
https://zoll-auktion.de/auktion/auktion.php?id=560540

Many years ago, a friend picked up a K 70, which former owner, a sexual predator would never see the daylight again. At the wrecking he found ropes and trammels under the seats...