Among foreign residents in Japan, there are certain markers of prestige: permanent residency, N1 on the Japanese-Language Proficiency Test, double-glazed windows. But none seem to divide along the lines of the foreigner haves and have-nots so sharply and cleanly as a coveted Japanese driver’s license. Casually drop “Can you drive in Japan?” at a gaijin gathering and people either nod in placid solidarity or look shattered. That’s because converting a valid driver’s license from another country