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

McLaren's latest P12 teaser video

McLaren has followed up its announcement that its Paris-bound P12 hypercar, teased with an image last week, by releasing a video that suggests the shape and aerodynamics we can expect from the car. The video shows a series of lights passing over an invisible object – the P12 – and using the lightshow it is possible to imagine the general shape of the car, without any detail of course. If the P12's unveiling is anything like the light show in the video, it should be a fantastic experience in Paris.

Renault/Lovegrove Studio Twin'Z concept

The Renault Twin'Z concept is a collaborative project with British designer Ross Lovegrove, filling the fifth stage in Laurens van den Acker's 'lifecycle' – Play. It's currently on display at the Milan Salone. Essentially previewing the all-new, rear-engined Twingo co-developed with Daimler, the Twin'Z takes this relatively humble city car and, thanks to the input of Lovegrove, it appears to have taken on an organic nature, which shouldn't be unexpected to those familiar with his work.

Concept Car of the Week: Chevrolet Express (1987)

A fantastic selection of concept cars from the ‘80s were featured in Back to the Future II such as the Pontiac Pursuit, the Ford Probe or the Saab EV-1, but my personal favorite was the Chevrolet Express that almost ran over Marty upon his arrival in the year 2015. Before being a movie extra, the Express was presented in 1987 as another attempt from GM to adapt aircraft engineering to automotive requirements. GM had been experimenting with gas turbines for more than 20 years, dating back to the 370hp XP-21 Firebird from 1954, but that concept was quite primitive compared to its younger brother.