I don't have any pictures becuase it happened so fast. I was on Crenshaw Blvd. about to make a right to go East on Wilshire when I saw a light blue/silver M5 going East on Whilsire Blvd. heading toward Downtown. It was followed by what looked to be a convertible black M6 with some kind of wheel monitor, probably for EPA testing.
Hopefully someone can get a pic.
Hopefully someone can get a pic.