Paterbrat; thank you for your composed and wise answer, which made every sense. I will take your advise to heart, thank you.
Pilotbear: in case oil is on the track there's an oil flag (red/yellow stripes) waved by the marshalls which alerts me to take less risk in that particular part of the track. I've been offered several rallye drives which I refused because of the enormous risk involved for the spectators.
I hope this tragedy will start people think whether breaching safety factors is all worth......
Capt.KAOS