Heats, Sprint, Endurance
I'd probably set up the racing like this:
10 Lap Heat races to establish starting position and more or less get everyone warmed up for the Sprint. (since I would guess there is room on the track for 20-30 racers)
10 Lap Sprint event. (this will include ICE and electric bikes and is the Main event for electric bikes)
An Endurance "Death Race" that
follows the Sprint to determine who can last the longest on the track and survive the most laps. This allows anyone that didn't win a trophy in the Sprint one last chance to win. Also, by placing this AFTER the Sprint it will require the racers to continue after they have already had an adrenaline dump in the Sprint. The one who survives the day wins.
Trophies go to 1-2-3 in the Sprint and the winner of the "Death Race".
You have to keep the "Death Race" theme and that means endurance over many laps. So by moving the Sprint before the "Death Race" it allows the electric bikes to get their racing in early and then the more important part of the racing for the ICE bikes is at the end.
This would make everyone happy I think.
In some ways the Heats and the Sprint are just warmups for the "Death Race".
It's possible that the ICE bikes will sweep all the trophies, but the electric bikes are
certain to lose the "Death Race", so even if the electric sweeps the Sprint the ICE bikes are guaranteed to win in the final race of the day. ICE cannot lose with this setup.
We (electric guys) need to remember that the ICE guys pride themselves in being able to outlast, outdistance anything with their high mileage machines. The ICE racers need an area to win at which is different than electric which is the opposite and has limited range. By placing the electric favoring Sprint before the ICE racing "Death Race" the two can be integrated together. Most of the ICE racers will look forward to the "Death Race" as their main event and the electric will put everything into the 10 mile Sprint.
I used to own an MB5 and would go for long 200 mile rides on the weekends (for about $2 gas) and so I have some appreciation for these long distance events like the "Death Race". The ICE racers want a loooooooooong race !!!
The goal for ICE would be first place in the Sprint and to win the "Death Race" too.
The goal for electric would be to lock out ICE in the Sprint and surrender to the inevitable in the "Death Race".