I read in the web...
"...he used this vehicle in 1942 in northern Afrika. Rommel was well-known to ride into battle on his personal Sd.Kfz.250/3, which had the word "Greif" written prominently on its sides. This vehicle that was named after a mythical creature will forever be associated with the famous legendary Desert Fox..."
Maybe it is related to this?
"...the griffin, griffon, or gryphon is a legendary creature with the body, tail, and back legs of a lion; the head and wings of an eagle; and sometimes an eagle's talons as its front feet. Because the lion was traditionally considered the king of the beasts, and the eagle the king of the birds, by the Middle Ages, the griffin was thought to be an especially powerful and majestic creature. In medieval heraldry, the griffin became a Christian symbol of divine power and a guardian of the divine..."