Magnaflow Catalytic Converter 93217 Dodge Durango on 2040-parts.com

GM's Lutz to retire May 1

General Motors Vice Chairman Bob Lutz plans to retire from the automaker effective May 1, according to a statement released by GM on Wednesday. Lutz, 78, had been serving as a senior adviser to GM Chairman and CEO Ed Whitacre after shelving retirement plans to take charge of the automaker's marketing after it emerged from bankruptcy in July 2009. An outspoken executive who both challenged global warming and championed GM's all-electric Volt, Lutz is credited with revitalizing GM's product development efforts after being hired by former GM CEO Rick Wagoner in 2001.

Kia GT4 Stinger concept: OFFICIAL – Detroit Auto Show

The Kia GT4 Stinger concept (pictured) has been revaled in Detroit Kia say the GT4 Stinger Concept – revealed at Detroit after a series of teasers ahead of the reveal – is their take on a purebred, affordable sports car. And it looks very promising. Under the bonnet of the striking GT4 Stinger sits a modified version of Kia’s 2.0 litre turbo petrol engine, which is good for 311bhp and drives the rear wheels through a six-speed manual ‘box, with a set of 20″ alloys with centre locking and carbon fibre inserts covering 15″ cross-drilled discs and four piston callipers for stopping power.

Hennessey tunes the McLaren MP4-12C

Texas tuner Hennessey Performance will offer an upgrade package for the McLaren MP4-12C. The result is an 800-hp machine that looks even more sinister than the car it came from. The blood-red paint, carbon-fiber aero kit and blacked-out wheels in the rendering all say supercar to us.