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

2015 Mercedes C-class reveal at the Detroit auto show

We got our first look at the new 2015 Mercedes-Benz C-class sedan last month in a series of photographs released by the German automaker. Now, amid the melee of the Detroit auto show, we finally get to see the fourth-generation C-class in person. As expected, the new car does a great impression of a baby S-class with a strong front end, plenty of side-sculpting and a gentle slope to the rear.

RCA Citroen/Exa Double Challenge project

Second year students at the Royal College of Art in London revealed a series of projects at their interim degree show last week. Developed in collaboration with French automaker Citroen and the Exa Corporation, a leading supplier of aerodynamic software, the Double Challenge project asked students to design an ultra-compact model that could establish a unique Citroën e-vehicle aesthetic for the future, all while adhering to certain aerodynamic criteria that would not only reduce energy consumption and ensure stability at speed, but also visually communicate efficiency through its design. The project, which kicked off in October last year, was closely followed by representatives from Citroen and Exa, who examined each of the projects and chose a winner, Heikki Juvonen, at the event last week.

Motorcycle Gear Review: Alpinestars T-Jaws Air Jacket and Oxygen Air Overpants

For motorcycle riders, it's rarely the perfect temperature. Winter means plugging in to an electric-warming vest. Summer means risking road rash with less gear because it gets too hot.