Speed and noise. Far be it from me to tell you the reasons you should be opening your wallet or purse to extract $573,966 but, if raw pace and the soundtrack to match are your primary concerns, the Lamborghini Aventador SVJ Roadster has twelve cylinders and a removable roof to sell you.

The theory behind the Italians’ most expensive production series car has been thoroughly demonstrated already. The coupe version has the same 6.5-liter naturally aspirated V12, the same 531 lb-ft of torque, and the same 770 horsepower as the convertible. You get all-wheel drive too, along with four-wheel steering.
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