Garmin Catalyst Driving Performance Optimiser $1228.95 Delivered @ Sparesbox eBay

Original Coupon Deal

Cheapest ever according to camelcamelcamel.

Those of you into cars and track days would know what this is. But for those who don't:

The Garmin Catalyst is a device that analyzes your driving performance on racetracks and provides real-time feedback. It uses GPS, image processing, and accelerometers to generate your racing line and give you audio cues on how to improve.
It also records your lap times and other data, so you can review your performance after your session. The device comes preloaded with a global track database and can be easily mounted in your car.