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Concept Car of the Week: Mazda RX500 (1970)

Developed by the Toyo Kogyo Company's advanced design and engineering team, the Mazda RX-500 was described as a ‘mobile test bed for high-speed safety'. Looking at its design, the team's childlike enthusiasm has shone through, resulting in a very cool concept.  From the rakish front to the wraparound windscreen and on to the bread van rear, everything communicates high-tech and ‘70's futurism while also channeling a little of the Star Wars X-Wing. Thanks to plastic body panels, the concept weighs only 850kg and is powered by a 491cc rotary engine delivering 247bhp fitted behind the cabin, in front of the rear axle.

Smaller Mercedes SLS confirmed, and with front-mounted V8 too

Baby Mercedes SLS AMG - or at least how it could have looked if mid-engined We’ve believed for some time that Mercedes were planning a smaller version of the SLS, but so far there’s been no official word. But that’s now changed, with AMG’s Christoph Jung telling AutoExpress that Mercedes and AMG are currently working on a smaller SLS, to go head-to-head with cars like the Porsche 911 and Audi R8. Interestingly, we’d thought that Mercedes would go the route of a mid-engined two-seater for the baby SLS, and that it would probably get a turbo V6. But it would appear not.

Nissan Ellure concept

The Ellure is one of the most significant new car concepts to be unveiled at this year's LA auto show. A D-segment-sized sedan, the project has seen input from both Nissan's studios in Japan and NDA, where the concept was completed. According to NDA design chief Alfonso Albaisa, the concept explores a new global design language Nissan is working towards for its range of sedans.