After we’ve previously filmed two rather extraordinary Boxster/Cayman prototypes running the ‘Ring in July, Porsche has now returned to the Nürburgring with two other Boxster S/Cayman S prototypes. Again, these two cars feature an engine sound we haven’t heard before on the Boxster or Cayman. And again it raises the question if these could be 4-cylinder testcars of Porsche?
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