@JST - I'll repeat my question to you. Which car would you call best car in the world?
This discussion reminds of people that love to complain that XYZ sucks but then, when pressed, quietly admit that XYZ is the best option available in reality. And then we can all move on to more productive topics.
See my edit above. Taking into account the various criteria I laid out, plus some more, how about the Golf GTD? It does everything you need to do (other than go off road), it carries five people, it's relatively cheap to buy and run, and it still has some sporting pretensions for when you want to have fun.
To bring this back to Tesla, when we talk about the (notional) Gen IV, in my mind the Golf GTD/GTI are the bogey for that car. If you can make an electric car that does to the Golf GTI/GTD what the Tesla Model S does to the Porsche Panamera, you've irrevocably changed the world and earned your trip to Mars.