In British service, the M8 was known as the "Greyhound", a nickname seldom if ever used by the US. The British Army found it too lightly armored, particularly the hull floor, which anti-tank mines could easily penetrate (the crews' solution was lining the floor of the crew compartment with sandbags). Nevertheless, it was produced in large numbers. The M8 Greyhound's excellent on-road mobility made it a great supportive element in the advancing American and British armored columns. It was marginal off-road, especially in mud.