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

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.

SEAT IBE EV Concept at Paris

SEAT IBE Paris Concept How good’s your memory? Does the SEAT IBE Concept ring a bell? It should, because SEAT rolled out the IBE at the last major European Motor Show back in March at Geneva.

Honda AC-X Concept

The Honda AC-X plug-in hybrid sedan will form part of the company's seven concept vehicle strategy at the 2011 Tokyo Motor Show. From the images released by Honda, the AC-X appears similar in both size and proportion to the hydrogen fuel cell-powered FCX Clarity, with its a-pillars and windscreen base pulled far forwards, a smooth transition over its nose, screen, roof and rear deck and an elongated, sharply cut-off tail. Aerodynamic efficiency is clearly paramount.