Now we can reveal to you a new SLR special edition speedster model is about to be revealed, spy shots from autoexpress and sketches reveal it will be a modern interpretation of the original 1955 SLR sportscar.

In 1955 Sir Stirling Moss drove the Mercedes-Benz 300 SLR to Victory in the demanding Mille Miglia race, the starting time of 7:22am became synonymous with the model and more recently the legendary numbers were used for the special edition SLR 722 model. Now we can reveal to you a new SLR special edition speedster model is about to be revealed, sketches and spy shots from autoexpress reveal it will be a modern interpretation of the original 1955 SLR sportscar.

The Mercedes SLR 722 will be the base for the model which will be limited to a production run of 75 cars, the roof will be completely removed and will feature a small low rising windscreen. The roofless SLR will lose about 440punds off the SLR's kerb weight resulting in the fasteest top-speed of any SLR of 217mph and it can accelerate from 0-186mph in 26 seconds.

The model is unlikely to pass the strict safety guidelines for Europe or America due to the lack of a roof leading us to believe it will only be sold in the middle-east where the warmer climate will suit the speedster.

Sources state we could see the unveiling of the model as soon as tomorrow.

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