Environmentally conscientious, wealthy car enthusiasts are in luck! The much-hyped "D" unveiling came last week as Tesla CEO, Elon Musk, presented what appears to be a very impressive version of its plug-in Model S electric car called the P85D. Boasting 691 horsepower, 687 ft/lb of torque, AWD and a blazing 3.2 second zero to sixty time, the new rich peoples' toy is expected to cost in the neighborhood of $120,000. In fact, the car is so darn impressive that the only obvious question is why in the world do we need to give the affluent purchasers of cars like...