Race 22333, my driver Jim Papadopolous, while leading, did not pit despite the green "Pitting" light being shown. This may be because the light came on, I turned it off, then thought better of it and turned it back on again - but all this happened a long way before the pit entrance, it's not as if I turned it back on before he dove in (or rather didn't).
He therefore ran out of fuel and retired - this will certainly cost me 4th in the championship, and probably change the winner as well since the race has now been gifted to guy who was running second at the time (who was 20 points back and closing fast in the standings).