I was out driving my '69 Mustang convertible yesterday and I wound up at a stoplight in the right lane behind a Porsche Panamera. A beautiful black beast. In the left lane was a silver BMW M3. When the light turned green the two German performance/luxury cars rolled off and stayed side by side all the way across the intersection. Neither one seemed willing to give the other an inch. There was a freeway entrance about a quarter mile ahead on the left side and the M3 started to pick up the pace to get in front of the Panamera and, because I was in a convertible with the top down, I clearly heard the Porsche jump on the skinny pedal and then the M3 respond. To my surprise, the M3 crisply drove past the Porsche and moved over in front of him to get on the freeway. Somehow I had expected the Panamera to win the tussle.