It's really cool that the A-10 is built around the gun which is bigger and much longer than a VW Beetle. The gun is so powerful that it had to be mounted at the exact balance point of the fuselage because while the 7 barrel rotary cannon is being fired the recoil causes the the plane to slow down. If the gun was mounted off center, it would cause the plane to yaw which, as a pilot, I can imagine is not something you want.