Back in Episode #62, we asked our Talking Cars viewers if we should buy a Tesla Model S P85D, and heard a resounding "yes." Your support and interest was one reason for us to buy our most expensive test car yet. While the P85D delivers "insane" performance combined with impressive energy efficiency, that wasn't the only reason for our purchase. This latest Model S also offers Autopilot, with upcoming software updates that will make the Model S one of the first self-driving cars you can buy.