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

Nissan Juke R takes to the track on video

The road-legal Nissan Juke R may never be built, but today Nissan showed off its the GT-R-powered Juke performing on track.  It's a madcap one-off Juke pepped up with the GT-R's 523bhp 3.8-litre twin-turbo V6. The video below was recorded at the MIRA track in Warwickshire, as engineers had a chance to fine-tune the chassis.

Koenigsegg's craziest supercar yet debuts at Geneva

Here's what you need to know about the Koenigsegg One:1. It weighs 1,360 kilograms; it produces 1,360 hp. One horsepower per kilogram, which is why mad scientist Christian Von Koenigsegg is absolutely justified in bragging about it: it's the world's first "mega car," he said.

Audi Urban Future: Project New York

Audi will take advantage of New York's 'Festival of Ideas' to display their vision of Manhattan in 2030, an objective that fulfills part of the German automaker's Urban Future Initiative. Now in its second year (the first was held in Venice last year) the initiative was created with the intention of looking at the future of megacities as well as individual transport methods and mobility. For Project New York, Audi will be bringing together architects, designers, artists and researchers to visualize ideas for the city's future, and the carmaker has collaborated with the Architizer architecture community to create a 1:1200 scale model of Manhattan.