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GM's Ed Welburn walks Jay Leno through the Elmiraj concept's design [w/Video]

General Motors' vice president Global Design Ed Welburn stars in the latest of the 'Jay Leno's Garage' YouTube series, running the talk-show host through some of the new Cadillac Elmiraj concept's design features and what it means for the brand's future. We get a look at all the classic Cadillac design cues such as the vertical headlamps and tail lamps as well as the central hard crease that Welburn says is "important in every Cadillac". Leno and Welburn then move onto the Elmiraj's features, such as the large doors' integrated handles and the slimmer A-pillars before a more in-depth look at one of the concept's most striking features – the grille.

Z-Party: Nissan marks 40 years of sports-car fun

It's one of the most iconic names in the auto world: The Z car. No matter the number--240, 350, 370--that singular letter rings true with enthusiasts. And the style, power and pure fun of Nissan's famous sports car are being celebrated this week around Nashville.

Renault Twingo

Renault has released the first official picture of the new Twingo, a model set to make its debut at the forthcoming Frankfurt motor show. A clear departure from current form, the revised Twingo adopts the DRG from the DeZir, R-Space and Captur concepts. The full width grille sits atop foglights reminiscent more of the Nissan Juke than the DeZir's smaller items.