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An F1 slang term for an accident where two, or more, cars collide or the driver hits the wall. 

If the driver’s G-Force meter registers high enough, he will have a mandatory medical check and if the shunt happens pre-race (FP1, FP2, FP3 or quali), the pit crew is in for a busy time rebuilding the car before the next session. 

Andrew Burden

The author Kiwi F1 Fan