It was called the bullet train because it was rounded in front, but every time it went into a tunnel it would build up a pressure wave, and then it would create like a sonic boom when it exited.
Nazvan je vlak metak jer je bio zaobljen sprijeda. Ali svaki put kada bi ušao u tunel, proizveo bi val pritiska. A zatim bi proizveo zvučni prasak kada bi izašao.