Yfz450 Yfz 450 04 05 Rear Rotor And Rotor Hub on 2040-parts.com

2015 Mercedes-AMG GT teased

If you’re glum that the thunderous Mercedes-Benz SLS AMG is no longer in production, don’t be. There’s a new hot rod with a three-pointed star in town. This is the first picture of the new 2015 Mercedes-AMG GT – a sports car from the German firm that will go up against the Porsche 911, following its debut at the 2014 Paris Motor Show.

Nissan tests self-cleaning paint

Well that took long enough. Nanotechnology is here, and Nissan is reportedly using it in the paint on its little Versa Note hatchback. We would have started on something a little more exciting, like the hard-to-care-for matte finish on the GT-R's rear spoiler, but that's just us.

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.