A rig is a tool often used in automotive photography that attaches to the car or vehicle, enabling a photographic motion shot to be taken by the camera on the end of the rig. The results of using a rig are fantastic, allowing the camera to move at the exact same pace as the car gives a high speed motion blurring to the background and wheels whilst keeping the bodywork in crisp focus.
Rigs are available in a variety of shapes and sizes, from professionally built units that bolt directly to the chassis to DIY constructions using large vacuum cups, aluminium poles and specialist camera mounts (as per the example above by Matt Watkinson, from his excellent blog post; How to remove a rig in Photoshop.
The shots taken on rigs are usually at slow driving pace with a long shutter speed, allowing for the blurring action of the background and moving parts. The rig is then edited out in Photoshop by overlaying a photograph of the car without the rig attached, erasing out the unwanted poles and mountings.
Here are 37 awesome examples of rig based car photography from a range of talented photographers: