I have always admired armored cars crews. I think their vehicles are fast enough to get themselves in trouble, but not armored enough to get themselves out of trouble.
The M8 started its life as a “tank destroyer” vehicle. Very quickly, it was realized that the 37mm cannon wasn’t enough to take out a tank, and the vehicle got re-assigned mainly to cavalry and reconnaissance units. The M20 is a spin-off of the M8, based on the same hull but with a different top and used, for the most part, as a command vehicle, fitted with different radios and a folding map board.