Carquest 22652 Upper Radiator Hose on 2040-parts.com

Mercedes-Benz prototypes spotted

Modern technology makes it harder for automakers to hide their upcoming products from prying eyes. Take, for example, these images sent to us from Autoweek subscriber Jonathan Peters while he was in Utah. Peters speculates that what he saw was a gathering of a varied Mercedes-Benz cars being tested, along with cars from other carmakers for comparisons.

Porsche Panamera convertible plans uncovered

A series of European and U.S. patent applications obtained by AutoWeek show that Porsche remains committed to building a four-door convertible version of its flagship Panamera, despite recent comments from Zuffenhausen insiders indicating the car had been canceled. The new car, depicted in official drawings that accompany the latest Porsche patent applications filed in February, eschews the two-door route taken by all of its upmarket rivals for a practical four-door body.

Concept Car of the Week: Citroën Karin (1980)

With the 1980 Paris Motor show approaching and no new model to unveil, Citroën needed something to wow the crowds on its home turf. Trevor Fiore – who followed Robert Opron as the head of Citroën Design for a short time – gave the go-ahead for an innovative concept starting from a blank sheet of paper. The final concept was named Karin, and it was nothing short of breathtaking.