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

At GM, the tail fin is back--but now it's a blade

Tail fins are making a comeback at General Motors Co., although they are a far cry from the saillike appendages of the 1950s. And this time the company is calling them blades. The look, pioneered on the Chevrolet Volt to improve aerodynamics, will appear on other models to boost fuel economy, said Ed Welburn, GM's global design chief.

Video: Rolls-Royce Wraith design process revealed

Rolls-Royce has released a video exploring the design process behind its Wraith fastback, revealed earlier this month at the Geneva motor show. The video is one of a series that look at the Wraith's development process, focusing on the design and performance of the Wraith. Key figures behind its development such director of design Giles Taylor and head of interior design Ian Sheppard feature, explaining how the Wraith evolved the way it did and how the design teams made their decisions.

Concept Car of the Week: Matra Laser (1971)

Founded in 1937, French company Matra began its activities by manufacturing military equipment such as aeronautics and weaponry. In the mid ‘60s, under Jean-Luc Lagardere's ambitious direction, the company bought Automobiles Rene Bonnet to expand its portfolio with street and racing cars. The first model solely developed by Matra was the bonkers, but brilliant, 1967 M530, which took its name from the company's surface-to-air missile the R530.