Fuel calculations: revert to max-per-lap-consumption as soon as we have a FCY
FCY can completely hose the historic average calculation and can also skew the recent average enough for it to be nonsense. If a session has 1 or more FCY periods since the average were reset (or maybe globally?) revert to the max-per-lap consumption. See http://thecrewchief.org/showthread.php?1324-Bad-Fuel-Calculations