Speedwerx Lightweight Muffler Arctic Cat Zr/f/xf/m 9000 1100 Turbo 2012-16 Black on 2040-parts.com

Citroen DS4 Racing concept (2012) first pictures

Citroen is following up the DS3 Racing with a similarly heated-up version of the DS4: and the new 2012 DS4 Racing is unveiled today. Like its smaller brother, the DS4 Racing has been developed by Citroen Racing, the team behind Seb Loeb and the French firm's dominating seven-time WRC world championship activities. What's new on the Citroen DS4 Racing?

Tesla system will swap a Model S battery in 90 seconds

"This is the title fight," said Elon Musk, in typical brashness. "This is battery-powered versus gasoline." The Tesla CEO preached this to a crowd of Tesla owners and supporters while formally confirming the company's worst-kept secret: the fact that the Model S sedan's batteries were designed from the beginning to be swapped out. The system Tesla envisioned has plenty of ambitious, techno-wizardry automation, with a focus on as much convenience as possible: The Model S will drive over a pit containing machinery which automatically changes the battery from underneath in approximately 90 seconds -- and the driver doesn't even have to get out of the car.

Driving Toyota's Pro/Celebrity Scion FR-S race cars

At the Streets of Willow Springs, there's a back straightaway that crests over a downhill and into a series of sudden, unsettling left turns. It's one of the most dramatic parts of the track, one that always trips up timid run groups. And as it turns out, heading blindly at 90 miles per hour, skimming the cones of the artificial chicane normally designed to slow lesser drivers who aren't Formula Drift prodigy Ken Gushi, will really put the fear of mortality into anyone who's signed up to ride shotgun -- especially when the car is the brand-new Scion FR-S race car for Toyota's Pro/Celebrity Race Series, here on its first outing.