If you are looking for a mechanical solution for an Audi or VW suspension, the official Zackab website provides the tool and "full" usage tutorials. Zackab (@Zackab.de) • Facebook
However, if you are looking for a (perhaps a model story for writing, or a story with a moral lesson typical of exam questions), here is a standard example of a "Useful Story" often used in educational contexts. zackab 2020 full