The CCR was tested by Road and Track or some other magazine to 249, then the CCX (the newer one) was tested to 260 something, I wish I could remember where the article was but I know that the CCX is faster.
The Koenigiss posted a time faster than 250 but it was unofficial since it has to make it both directions down a track and average. However, shelby is building the SSC which so far has posted 256mph...
That link goes to the press release on the shelby site that says it broke the official record currently held by the Koenigsigg and the unofficial record held by the Veyron.
Brian Hobaugh SCCA National Tour June 2014
First Hemi 'Cuda Convertible Ever Built
Short clips: Goodguys Pleasanton autocross and pit videos
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