Johnson V4 Trim Relay Box on 2040-parts.com

New Mercedes A45 AMG has 105 years of 4WD on its side

With the new Mercedes A45 AMG on the horizon – complete with 4WD – Mercedes chart the history of all wheel drive on their vehicles. We tend to think of 4WD road cars as a modern innovation, and certainly very few 4WD road cars hit the road in a mainstream way much before the 1980s (the Jensen FF was hardly mainstream before someone points out that was in the 1960s). But the history of 4WD goes back, certainly in the case of Mercedes, a surprising 105 years when Daimler built the Dernburg-Wagen, a 4WD vehicle that not only got all-wheel drive but all wheel steering too.

2011 Audi R8 GT, an AW first look

Three years after it burst onto the supercar scene, Audi has unveiled a hard-core version of its R8 called the GT. Based on the existing mid-engine R8 V10 and incorporating aerodynamic, weight-saving and mechanical developments used by the company's R8 LMS GT3 race car, Ingolstadt will build just 333 copies of the new 560-hp four-wheel-drive performance flagship. Pricing has not yet been revealed, but given the extent of the changes to the new two-seater, buyers should expect a hefty premium over the R8 V10's $147,000 price tag when the GT goes on sale in North America.

Concept Car of the Week: Mazda Taiki (2007)

Mazda had been doing fantastically well with its concepts since the end of 2006, and its offering for the 2007 Tokyo motor show didn't buck the trend. The fourth in the 'Nagare' series that explored the idea of 'Flow, it lined up on the Mazda stand with its older brothers for the first time, and was understandably a most impressive display and one of the highlights of this show. Here's what Nick Hull had to say about the Taiki at the time.