Unbelievable that there wasn't instant vaporization of the fuel and fire with the energy of that crash. Don't want to contemplate how worse it could have been.
I am guessing that they carry only enough fuel to complete a safe race with a small 'reserve' as a safety consideration. Only basing this on what I see as logical.
"IF" the races get to continue, it would be 'smart' (to me) to have all the spectators in the center of the race so the 'energy' in a mishap would be toward the the outside of the race path and away from the crowd. Organizers would have to have an underground tunnel for a tram to go back and forth with spectators through the tunnel under the runway during the race time.....(if that was what was necessary to 'git it done').
Just my hick-a-billy thought,
lc
Condolences and sympathy to all who have lost or injured loved ones or were injured themselves.