Final answer:
A vehicle-borne improvised device (VBIED) is a motor vehicle used as a bomb. It is commonly associated with terrorism and insurgency, where vehicles are utilized to carry and detonate explosives for destructive purposes.
Step-by-step explanation:
A vehicle-borne improvised device (VBIED) is a motor vehicle that is used as a bomb. This term is commonly used in the context of terrorism and insurgency, where individuals or groups use vehicles to carry and detonate explosives for destructive purposes. VBIEDs can cause significant damage and casualties due to the combination of explosive materials and the impact of the vehicle itself.