I have filmed a 1 of 30 Lamborghini Diablo SVR ever made. Video shows the car firing up the V12 engine and driving around London. This was is born as a non-street legal car, indeed just a few have been converted for a street-legal use, due to the restrictive laws of homologation the owner had to convert/change many parts of the car.
Chassis Number VLA12169 so you can check and see that this is a real SVR.
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More London 2011 supercars videos here!