The sharp edges of the AGV nose design perplex me. I think I 'get' how it should work with side winds: in place of a big airfoil like the N700's, the nose is kept down by that smaller widening above the first bogie; which could be sufficient because instead of escaping above a long flat nose, air is diverted along the side of the train, thus keeping pressure on the upper surface of that widening higher. But what could be the effect from vorticles on the other side? And are the sharp edges not a noise source? And what could the sharp edges on the underside of the tip of the nose be good for? *Lunatic*, n. One whose delusions are out of fashion.