Arlen Ness Adjustable Slam Kit 17-101 on 2040-parts.com

Alfa Romeo 4C

The production version of the Alfa Romeo 4C will make its debut at next month's Geneva motor show, two years after the concept appeared. Largely unchanged from the prototype, the 4C retains its mid-engined layout, short and wide proportions (less than 4,000mm long, 2,000mm wide, 1,180mm high and a 2,400mm wheelbase) and broadly similar surfacing. The changes appear to be more focused around productionized details.

Concept Car of the Week: Opel Junior (1983)

30 years ago, Opel was already thinking about a very compact vehicle that would fit in its range below the Corsa. The Junior Concept was a realistic study of a future-oriented A-segment car with an interior packed with innovations. The three-door Opel Junior offers room for four passengers in a package of only 3,410mm in length.

Porsche 911 GT3 R Hybrid at the Nurburgring – Video

The Porsche 911 GT3 R Hybrid Nurburgring video below In February we reported that Porsche has developed the unthinkable – a hybrid 911. But this wasn’t a hybrid 911 with a bank of batteries and a fluffy-bunny conscience, but a rampant track 911 with a great big electro-magnetic flywheel and a KERS-like thump of an extra 160bhp – the Porsche 911 GT3 R Hybrid. The 911 GT3 R uses technology developed by Williams F1 and comprises of a pair of generators in the front wheels that shove energy to a composite flywheel (conveniently located next to the driver – not sure how well that would go down on a road0going version) which is the stored and can be thrown at the back wheels whenever the driver wants, in a way very similar to KERS.