Dual Car Circuit Sprints consist of being split into groups of 6-8, heading out onto a course (for example the GP circuit with no dipper), having a warmup lap, then coming to a halt on the grid. You are then flagged away in pairs, with the next pair starting 10 seconds behind you, and so on. You get 3 laps with a standing start then the chequered flag. You then have one warm down lap.
You then get a second go (same as above) on the same course and the best time out of those 2 courses will get carried through to the overall result.
You will then repeat all of that on at least 3 separate courses – meaning you will do heaps of laps on the day! Excellent value for money.