GEV = Ground effect vehicle
Ground effect is pretty freaking scary and awesome. Ever seen a plane bounce on landing? It's often ground effect on the aircraft. It causes pilots to overreact which results in bouncing planes. Fun stuff! Ok scary but fun!
GE in reality is the fact that a plane flies better when it is lower than 1/2 it's wing span. So when you enter ground effect you all of a sudden have more lift than you expected.