• Correct me, if I am wrong, but it is because BMW is a abbreviation for the automobile corporations’ founder(s) & BMX is a abbreviation for the dirt bicycling racing. Without any corrections given…
    So what would you think replacing-
    BMW’s W with a Y mean? What would Y & BMX’s X with a Z mean? What would Z

    be abbreviations for & how would think they work with the other words, within each abbreviation (hope that understood)?