The Wolf, The Delorean, and the Champs Élysées

When travelling by bus to our farewell dinner with our group, we saw the strangest thing.  There were lots of horns blowing as we traveled down the Champs Élysées,  but this had become 2nd nature to us. 

Suddenly I saw a Mercedes that was weaving in and out of traffic, revving its engine. Next, its doors opened like the Delorean in the movie Back to the Future.  At the next red light, someone jumped out of the car in front of it.  They had a wolf's head on. They threw something into the Mercedes and then went on their way. As we continued down the Champs Élysées,  the Mercedes kept stopping close to the curb at each red light and then weaving its way through all lanes of traffic at a high speed, still with its winged doors up.  How strange!