78-89 Porsche 911 Catalytic Converter on 2040-parts.com

Mercedes CLA employs a cat in new advert to demonstrate its aerodynamic shape (video)

It’s the Mercedes CLA sliding cat advert We’re not entirely sure that Mercedes has chosen to focus attention on a cat in a new advert for the CLA to dig at Jaguar’s mickey-take of its chicken advert for Magic Body Control, but it’s definitely the cat that’s front and centre, regardless of the motivation. With the new Mercedes CLA boasting exceptional aerodynamic credentials, Mercedes has employed a stunt cat to slide up and over the CLA to demonstrate just how slippery their new compact saloon is. Already shown on TV in the UK at the weekend (during the new series of Britain’s Got Talent), the moggie in question – William, apparently – glides effortlessly over the CLA’s slippery shape to a soundtrack playing Rossini’s Duetto buffo di due gatti (which you may not think you know, but you do).

Citroen DS5 production-ready a Frankfurt

Citroen DS5 - Production ready at Frankfurt The Citroen DS5 debuted at Shanghai earlier this year – after a suitable tease, of course – but is arriving at Frankfurt as a production-ready car. Not that we can work out what Citroen has changed on the DS5 to make it production-ready. It still looks concept-y good to our eyes, and has a more than fighting chance of making inroads against more conservatively styled competition.

Concept Car of the Week: Nissan NX-21 (1983)

In the early 1980s, with the new millennium still seemingly an age away, Nissan Design America was tasked with imagining the family car of the future, while giving potential buyers a preview of the forthcoming N13 NX and EXA models. The resulting concept would be shown at the Tokyo motor show in 1983. Given confidence by the increasing success and expanding global presence of Japanese cars, including the previous generation N12 NX, Nissan's designers, led by Tom Semple, decided that the NX-21 (for 21st century) was the answer.