On the first weekend of December each year, the Pacifico Yokohama convention center is filled to the brim with highly imaginative machines for the Yokohama Hot Rod Custom Show. There's a whole lot going on—from crazy engineering to retina-searing paint jobs. But one Japanese custom builder stands out for entirely different reasons. Shiro Nakajima, otherwise known as 46Works, wows year after year with his tastefully restrained racing-inspired customs. A trained engineer and former boss of th...