Metra 99-6523 2014 Ram Promaster Truck Single/double Din Dash Installation Kit on 2040-parts.com

Citroen DS3 Red editions (2013) pictures and details

Citroen has kicked off the new year with a special edition DS3. The DStyle Red and DSport Red follow the usual special edition recipe: new colours, more kit, and less cash. But would you put up with that bright splash of red to score better value for money?

One lap of the web: Ferrari renders, Musk is a super villain and '50s Fiat commercials

A week ago we brought you patent drawing of a fastback-style Ferrari FF. X-Tomi Design rendered the car, which looks exactly like what we think an FF coupe should look like. Take a gander over at WorldCarFans.com.

Mercedes-Benz B-Class aerodynamics tested [w/video]

Mercedes-Benz has produced a video testing the aerodynamics of its new B-Class – which it claims is the most aerodynamically efficient car in the world – using a wind tunnel and fluorescent paint. The W245-generation B-Class has the lowest aerodynamic drag in its segment with a Cd of just 0.26, thanks to features such as serrated front wheel arch spoilers, optimized cooling airflow and a Pagoda roof to help airflow over its profile. The car's aero properties were put to the test at the MIRA vehicle test facility in the UK using fluorescent paint in 60mph winds to highlight its flow dynamics, only visible under UV lights.