Here are the backstories behind the emblems and logos of the world's most popular automakers, from Acura to Volvo and every brand in between.

What the sigma? Some know “sigma” as the 18th letter of the Greek alphabet but it’s also teen slang for a cool dude.

Forget the myths. Learn the lessons the 100 most famous logos teach about simplicity, memorability & what really works for business branding.