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

Nissan Juke-R (2011) first official pictures

Nissan has form for creating serious bonkers mash-ups – and the new Juke-R is the latest in a long-line of go-faster humdrum models. They've dropped the turbocharged V6 from a £72k GT-R under the bonnet of a Nissan Juke, spawning a rather bonkers supercar crossover. Strictly for promotional purposes, you understand – there are no plans to sell the new Juke-R.

BMW ActiveHybrid 3 (2012 / 2013): New 3 Series Hybrid details revealed

2012 BMW ActiveHybrid 3 - on sale late 2012 BMW hasn’t had the most astonishing success with its hybrid offerings to date, but despite that, and following the reveal of the 2012 3 Series last week, they have announced details of the 3 Series hybrid – the BMW ActiveHybrid 3. Just like the recently revealed ActiveHybrid 5, the BMW Active Hybrid 3 will get a 302bhp twin-turbo six-pot (the same engine as the 335i) together with an electric motor which throws an additional 53bhp in to the mix. That should mean a 0-60mph of around 5.5 seconds (although BMW has given us no performance figures) and it will give 44mpg, exactly the same as the bigger ActiveHybrid 5 – and not exactly spectacular.

Porsche 918 RSR

Following an absence of four years from the NAIAS, Porsche had been promising an all new concept to its North American contigency. The 918 RSR is exactly that. Evolving from the 2010 918 Spyder concept shown in Geneva, the RSR stays true to the overall theme of the Spyder but adds a roof and race-specific elements.