That Prowler is pretty sweet eh? But combine that roll cage with the Argo, now you've got something that's amphibious, and will carry around up to six people!
Surebet, the point of RFID is the short range, the shorter the better. Read: sensor arrays all over the outside of the actual (I mean real, actual, surplus) main battle tank's hull. The tighter the range, the better, you wouldn't want a near miss to set it off really.