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AutoWeek office swag: Mazda rotary-engine keychain with realistic motion

When I got the keys to our long-term 2011 Mazda 5 last week, they came with a surprise--this aluminum-and-brass keychain in the shape of a rotary-engine housing, complete with moving rotor. The rotor doesn't just rattle around or spin in a circle. Thanks to a thumbwheel on the back of the housing, coupled with a timing gear and offset crank journal, the thing actually moves in an approximation of epitrochoidal motion just like a real Wankel.

Citroen C4 Cactus revealed in production guise ahead of Geneva Motor Show Debut

The Citroen C4 Cactus (pictured) revealed in production spec The Citroen C4 Cactus could probably not have been conceived by anyone other than the French, and the concept we saw at Frankfurt last year was certainly original. Now, Citroen are putting the C4 Cactus in to production and, surprisingly, not a huge amount has changed from the concept. That means the C4 Cactus – with a wheelbase the same as a C4 but with a footprint more the size of a supermini – weighs in at just 980kg, so even though its engines are small and frugal it will have acceptable performance.

CAR meets Porsche’s 2014 Le Mans chief

By Ben Pulman First Official Pictures 11 December 2013 14:50 Porsche is returning to Le Mans in 2014 for the first time since 1998 with an all-new LMP1 prototype, and with ex-Red Bull Racing Formula One driver Mark Webber as its star driver. Audi has dominated Le Mans for the past decade, but new-for-2014 rules allow for any engine size and configuration, and instead focus on energy consumption per lap. With the slate wiped clean, 2014 will be Porsche’s best chance to beat its fellow VW Group member, and the strong Toyota team.