A good video from Mercedes Benz, it explains the basic design of an armored vehicle and the testing process. The video shows the testing of an E-Guard designed to conform to VR4.  But it’s not the car that makes this video valuable, it is the time taken to show how armored cars should be tested.  There is also a video on Run flat tires. Both videos can be used as an educational tool.

http://paultan.org/2009/07/06/mercedes-benz-e-guard-vr4-armored-vehicle/