Well, a seized A/C compressor would do it, and have about the same effect. Did the smoke smell like rubber, oil, or something else? What color was the smoke (white or black?)
Playing the Race card I see>
What, are they voting on a new Pope already?
Of what little I saw it looked a bit dark but was mostly gone by the time I got the car off the freeway. I hardly/never looked in the rear view mirror while getting the car off a busy freeway.