A test that gives some perspective of this awesome V12 hypercar’s capabilities.There\'s no reason for Lamborghini to lie about the Aventador\'s performance capabilities, but without putting the flagship to the test can you really believe that the 4WD 691hp supercar can go from 0-62mph in less than three seconds, or 124mph in less than nine? What about standstill to 186mph in 24.5 seconds?In any event, is this enough performance to justify a $390,000 asking price? All these questions and more are revealed in Autocar\'s three-way test. Lining up beside the Aventador, is a Mercedes-Benz SLS AMG with its 563hp V8 engine upfront and RWD, and the fastest 997-generation Porsche 911 GT2 RS ever made, with 611hp, more torque than the Lambo, and a quarter-ton weight advantage.