Flowmaster 40 Series Delta Flow Chambered Muffler For 2011-2014 Dodge Challenger on 2040-parts.com

Brabus SV12 R Biturbo 800 (2010): world's fastest 4dr

Warped Merc tuner Brabus has turned the latest S-class into the world’s most powerful and fastest saloon car. The new Brabus SV12 R Biturbo 800 takes the S600 and transforms it from discrete businessman cruiser to 800hp limousine bruiser. The 5.5-litre V12 has grown to 6.3 litres, and power increased to a heady 788bhp (800ps – hence the name), with a theoretical peak torque of 1047lb ft.

Video shows Audi R18 'long tail' e-tron quattro's blistering Monza run

Audi has had a pretty solid run at the 24 Hours of Le Mans over the past decade, but we're glad they keep pushing the envelope. That's how they keep devising road-going spaceships like the staggeringly fast R18 e-tron quatto equipped with a “long tail” aerodynamic package. This quick video of the “long tail” hybrid testing at Monza gives us a preview of what we can expect at Spa next month -- and hints at what we'll see at Le Mans in June.

Is this the new Jeep Cherokee?

Editor's note: Here's the official 2014 Jeep Cherokee, hastily revealed by Chrysler after these unofficial photos hit the web Friday. Spoiler alert -- it looks the same. Jalopnik has real photos of what they're claiming is the new Jeep Cherokee and, well, we'll say this: It's better than the Patriot and Compass.