Because of the isolation of South Africa in the late 1970's and 1980's several unique BMW models were created here in very limited numbers. The first BMW M car ever produced was in fact a South African homologation special, the 530 MLE long before any other M models. This is an amazing fact not widely known.

Some of these models are popular as gangster cars and are used for shows at funerals of gangsters etc. (really!). They are therefore easily stolen and thrashed. This on top of all the other reasons that make old high performance cars rare will make these cars nearly impossible to find in future.

For the 40 years anniversary of BMW production at their Rosslyn plant a nice article was written:

BMW 40 1
BMW 40 2