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Originally Posted by DDG
https://en.wikipedia.org › wiki › Opel_Calibra
Opel Calibra - Wikipedia
When launched on 10 June 1989, the Calibra was the most aerodynamic production car in the world, with a drag coefficient (Cd) of 0.26. To reach the record Cd figure, the prototype Calibra had to be taken to the DNW wind tunnel in the Nederlands where models could be tested above a rolling road simulating real life airflow.
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Not their first rodeo:
https://external-content.duckduckgo....c5f&ipo=images
Mercedes, Opel and Maybach. Not sure which one's which.
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.Because much of what is in the published literature is nonsense,
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