2009 Kawasaki Kx250f Kx 250f Header Pipe 09 10 M1ay6 on 2040-parts.com

Video: Michael Mauer on the 991-series Porsche 911

Porsche has released a video featuring its Design Director, Michael Mauer, explaining how he and his team went about redesigning the 911, an ‘automotive, engineering icon' as he describes it. "What we as designers are striving to above all is to optimize the width to height ratio with the result that although the 911's width has not increased, the front axle area has become wider, and we've managed to make the roof a bit lower," Mauer explains via a rather dramatic-sounding voiceover.

Mercedes SLS AMG Roadster: Official photos

Mercedes SLS AMG Roadster - it'll finally debut at Frankfurt in September The official arrival of the Mercedes SLS AMG Roadster is turning out to be a rather difficult event to call. It’s getting on for two years since we ran the first spy photos of the SLS Roadster, at which point we had expectations that it might arrive at Geneva in 2010. And we were almost certain that the SLS Roadster would finally arrive at the New York Motor Show last month after we published photos of an undisguised SLS Roadster out partying in Hamburg.

Watch this McLaren 650S hot-lap Monza

Here's a short video of the McLaren 650S lapping the Monza racetrack in Italy. The 3-minute, 40-second clip features the company's latest supercar doing high-speed pass-bys and revving engines at the gas station. The footage came out of the “Pure McLaren Driving Experience,” an event put together for company VIPs.