Estimate the time of day when the last car will finish from the time of day the first car
leaves the start line, the number of drivers and runs, launch rate between cars,
and various breaks and delays.
If the first car starts at 10:00am and you have 180 drivers with 4 runs each,
and the course is designed so that it is safe to launch cars with a 30 second
interval between cars, your last car will finish at about 5:35pm assuming
10 minutes for morning and afternoon heat changes, a 60 minute midday break for carts
and one course walk, and 15 minutes for unexpected delays.
On the other hand, if you keep the same parameters above but were able to launch cars at
a 25 second intervals, the last car will finish at about 4:35pm -
shortening the event by over an hour!