Cheers!
I used about 4 litres of fuel over the weekend. Not too bad considering how much fun was had. Bang goes another gallon!
Regarding the emergency car, each team had numerous cars. The smallest team had only 3 cars. It was down to each team to ensure that there was always a car on the track. If they failed to do this, every minute they were 'carless' they were basically losing laps and wasting time. They could use any car they wanted, so for example if The A team lost their Tmaxx's due to unreliability

they would have to change over to one of their other cars. They had 8 other cars to choose from, having the largest team.
Assuming 14 laps per 5 minutes was 100 percent performance, Team Flange's 567 laps over 4 hours was an 84 percent performance. Some of the lost percentage would be used up in change overs, fuel stops and technical problems. So 84 percent is pretty good.
The A Team was on 529, so put in a 78 percent performance.
Team Wankel 405 = 60%
Lilly Savages 360 = 53%
In all fairness to the teams that took part, most of the experienced racers were racing in the top 2 teams. It was also much harder the fewer cars you had. Lilly Savages for example had new racers racing just 3 cars. Considering this, they did a sterling job.