Arias Pistons 12.5:1 Compression 82mm Bore Honda B-series on 2040-parts.com

Mercedes SLS AMG Black Series (2012) first pictures

We’d be most surprised if you rejected the Mercedes SLS AMG for being too slow and too subtle, but if you crave a few racecar touches for your gullwing supercar then Mercedes will oblige with this: the SLS AMG Black Series. Like the ‘BS’ models that’ve gone before, the SLS Black employs a weight reduction, ramped-up power and better aerodynamics to give more extreme looks and performance. Read on for the full spec of a Mercedes with more power than a McLaren 12C Spider.

Renaultsport Megane Red Bull Racing RB8 (2013) first pictures

Five months after winning its third consecutive F1 constructor’s title, Red Bull has teamed up with F1 engine producer’s Renault to celebrate with a special hot hatch. It’s called (deep breath): Renault Megane Renaultsport Red Bull Racing RB8. Surely the engine supplier to the mighty Seb Vettel has upped power for this RS Megane?

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.