Although I loath the thought of a 4 wheeled vehicle on course with us, how about the following:
1. Crash Occurs
2. Red Flag Flys
3. Riders come into hot pit, and line up behind pace car
4. Pace car rolls and bikes follow.
5. Traverse track until Pace car rolls off at pit in.
6. Restart occurs on front straight, but NO passing is allowed until after the first turn.
Would this be a safer procedure for this type of activity?
(IMHO, there is no need for a Pace car. Maybe for endurance races, but definately not for sprints.)