Bugatti Veyron Grand Sport Vitesse gets 'most expensive exhaust system in the world' [video] PP-Performance tunes the Porsche 911 Turbo to 670 PS [video] Rowen International introduces its 458 Italia project [video] Ken Block shows off his Ford F-150 RaptorTRAX Lamborghini Aventador receives subtle gold treatment from Maatouk Design London [video] 1 of 1 Mansory La Revoluzione spotted in Dubai [video] Walkinshaw tunes the HSV GTS to 680 bhp [video] MEC Design teases Project Cerberus [video] Hennessey tunes the GMC Yukon Denali to 665 bhp [video] BMW X4 gets police livery from AC Schnitzer [video] RevoZport introduces their styling program for the Tesla Model S [video] Mercedes-Benz S550 restyled by MC Customs [video] BMW M6 Gran Coupe upgraded to 800 HP by PP-Performance [video] 2015 Ford Mustang GT gets 600 bhp thanks to Roush supercharger [video] Jet-powered Peel Trident goes drag racing [video] Scion Tuner Challenge one-offs revealed for SEMA [video] Hennessey tunes the Jaguar F-TYPE R Coupe to 623 bhp [video] Modified MINI JCW sets unofficial front-wheel drive record on Nurburgring [video] Lexani unveils their luxurious Cadillac Escalade Concept One [video] Toyota GT 86 overly tuned by Rowen International [video] Mike Newman in Nissan GT-R tuned by Litchfield breaks blind driver world speed record [video] Porsche 918 Spyder tuned by Oakley Design to 950 PS spotted in London [video] John Hennessey tests the 700 bhp Chevrolet Corvette C7 [video] 1974 Mercedes-Benz 300 SL modified by AMG showcased on video Twin-turbo Chevrolet Corvette battles 800+HP Nissan GT-R and Suzuki GSXR1000 [video] Tuned twin-turbo Ferrari 348 Challenge is a thing of beauty [video] Ridiculously lowered Nissan Silvia S13 tries to enter the driveway, loses both bumpers [video] Liberty Walk Ferrari 458 Italia with Armytrix exhaust system sounds brutal [video] Mercedes C63 AMG revs its super loud 6.2-liter V8 in London [video] This flame-throwing Ford Galaxy is not your typical family van [video]