Mazda MX-5 GT (2011) first pictures

This is the Mazda MX-5 GT, a super-lightweight version of the evergreen roadster that will enter the 2011 Britcar MSA British Endurance Championship. Mazda MX-5 GT, huh? Let me guess, not much weight but not much power either?

BMW Z4 GT3 (2011) completes testing

BMW Motorsport has released pictures of its upgraded Z4 GT3 race car. The 2011 car has completed testing and is available for customer teams. BMW Z4 GT3: the lowdown The Z4 GT3 may look like a regular Z4 that's been attacked by a boy-racer with a carbonfibre and tea-tray rear wing fetish. But under the skin the Z4 GT3 ditches straight-six power for a 4.4-litre motorsport-tuned V8 engine, hooked up to a six-speed racing transmissionBMW Motorsport takes a regular Z4 coupe-cabriolet body shell, and removes the retractable hardtop, bonnet, bootlid, front and rear wings and the bumpers.

Spy-Shot Bonanza

Below is a collection of reader-submitted spy shots. Frankly, we're stumped as to what these pictures show us, but speculation ranges from a BMW SUV in the first images, to a new BMW 7-series in the next set, to “your guess is as good as ours” for the last vehicle, caught testing in the Czech Republic. Your mission, should you choose to accept it, is to identify as many of the following images and report your guesses in the Comments section below.