Saw a BMW with three stripes on the grill the other day. Wondered what it was. Turns out the first red stripe on the right is for Texaco, the American oil brand, who, I guess, partnered with BMW during the early days of M racing. The light blue stripe on the left is for BMW and the Bavarian region. The purple in the middle represents the partnership of those two things and allows for a nice transition between the two colors. Always cool when nice looking design has meaning.