There was talk of making a road going version using the 5 cylinder diesel to replace the 4 rotor rotary of the experimental cars and Mercedes did extensive research and published quite a few papers on the idea.
Other demands meant the project was halted but the 5 cylinder moved to the production line and was used in the W123 series cars initially (1976 to 1985) and other variants later.
There were also scale models made in die cast in 1:18 th scale of the road going prototypes and some were available from MB dealers at the time.
Pete.
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