Restored M8 Greyhound Armored Car at the Military Odyssey event in Kent, Southern England The glacis sloped armor was designed to withstand 13 mm (0.51 in) heavy machine gun fire. M8 of the 10th Armored Spearhead reaches Quint Germany 9 March 1945. Production. Lo, 1944. Like other American armored vehicles (and some aircraft) of the war, the M8 was first utilized in the hands of the British Army and, like other armored systems before it, it was they who bestowed the M8 with its well-known nickname of the "Greyhound" due to its form and function. “Rusty” Armored Car of the 6th Cavalry Group With Modified .50 Cal Ring Mount 3rd Army February 17 1945. M8 Greyhounds of the 4th and 10th Armored Division in Bastogne. M8 of the 82nd Armored Reconnaissance Battalion, 2nd Armored Division at St. Once the specifications were made public, Studebaker, Ford and Chrysler submitted their designs, named respectively T21, 22 and 23, all of them very similar in appearance.