A Mercedes W115-ös modellnél mit jelent a "STROKE EIGHT" kiadás?

És úgy, hogy " /8 " sem ismerős? :)

Lusta vagyok gépelni, másolok a W115 wikijéről:

"Beginning in 1968, Mercedes marketed their model range as New Generation Models,[2] giving their ID plates the designation '/8' (due to their 1968 Launch year). Because they were the only truly new cars of the so-called 'New Generation' and because of the '/8' or 'slash eight' designation, W114 and W115 models ultimately received the German nickname Strich Acht, loosely translated into the English stroke eight."