Soldato
That's like saying we should close a motorway every time a tow truck has to collect a broken down car. These are the best drivers in the world. They should be capable of driving carefully around an obstruction.Its still dangerous and can happen because lapped cars under sc do drive faster than the rest of the pack to catch up and all it takes Is say a break failure etc near where the tractor is at and another potential bad incident happens.
Seriously red flag it once you need a crane to pick up a car. It's not rocket science.
Why are people so against a red flag? It's better for safety and the spier sport as the race can continue as it left off.