In the past, the problem was
In the past, the problem was that the Tesla could only do one lap. Maybe two if the track was short. Then its internal temperature control devices would step in and disable the power to limp-home mode. So mixing it up on racetracks vs. cars that can do multiple laps has not been the Tesla's game in the past. Maybe things have changed. I'm not trying to dis the Model S, it is amazing. Here is an example story explaining what I mean from Motor Trend one year ago: http://www.motortrend.com/roadtests/oneyear/alternative/1404_2013_tesla_model_s_p85_update_4/