Actually we ended with a pair of new records.
We had 50 paying members and 37 guests for a total of 87 cars. That's more club members than two rentals normally.

It topped the previous record for 77 cars.
I think we'll start with a drivers meeting from now on. Go over the on track break down ettiquette and have everyone checking hoses, radiator caps and the like before the pull into the lanes. Some simple things to try to reduce the downtime when a problem does happen.
Rick