If a heavy truck is loaded with an excessive cantilevered rear overhang load that drastically exceeds statutory limits, what hazardous vehicle dynamic occurs during emergency braking?

1. Dynamic forward weight transfer lifts the rear axle while the excessive rear polar moment causes rapid tail fishtailing and steering instability
2. The front brakes automatically disengage to protect the ABS electronic control unit from overvoltage
3. The engine automatically reverses rotational direction and stalls the transmission
4. The steering wheel locks permanently in the straight-ahead position due to power steering fluid overpressure