As I have discussed with you on MSN Chris, my preference would be for a Mini-GP style format, with free-practice, qualifying, and then a final. Varying prizes or trophies for final positions, fastest lap of the day, etc etc. The whole day would be something along these lines IMO:
- Arrive at venue for pre-race talks (I assume the venue will do some kind of prep-talks; discussing etiquette, the format of the day, racing lines, general rules of the site, safety etc). Drivers would then be kitted out.
- 2x 10 minutes of free-practice, depending on interest for the event, we will most likely have 20~ drivers, and so two sessions of 10 cars will be more than busy enough on-track.
- 8x 10 Qualifying races, again split into groups of a max of 10-12 (so each racer gets 4 qualifying races). Race format with grid start (10 minute timelimit). Get as many laps as possible down within the time limit, most laps (or fastest to get that number of laps assuming more than one of the same result). Fastest time takes pole for next qualifying race.
- 2x Finals. Your fastest/best time of any of the qualifying races will be put forward as your final qualifying position. This will determine 1) if you are in the A or B final, and 2) your position on the grid for your final. Again 10-minute time limit.
There will more than likely be a break at some point in the day, time enough to grab a drink/snack etc.
Of course, the above is only my idea of a GP style event, and is of course open for discussion, we have no idea as-yet if the venue will even entertain the idea.