My dad was an FBI Special Agent from 1940 to 1946 before he left and became a trial lawyer.
He went through a lot of training with weaponry that included firing weapons from moving cars.
Here is one of the training areas in the 30's that he probably went through in 1940.
I could probably figure out what the car is, but I'll defer to the vast knowledge of TCL.
Have fun (probably take some of you a couple minutes)