NO Cure!
There is no cure for Opelitis - and the only relief from it is to buy more Opels.
So get used to it!
Yes. People DO junk 57 T-Birds; 55-57 Chevys and near 20 million Model "T"s went somewhere .....
I don't doubt that even Ferraris have been junked - probably by jealous friends and partners .........
Junked 37 tonnes of Studebaker stuff myself because the club members were too cheap to come up with the scrap value - at $60 a tonne - go figure.