What is the Outright Greatest Car?

Yes, that broad of a question. All of us have different preferences on what make a car inherently good, so there will be no correct answer, save for your own. Answers could range from what car most changed the world in light of a problem, what car redefined the idea of 'speed' for a generation, or just a car that brings tears to your eyes.

Please explain below why you think a particular car is worthy of the title of 'Outright Greatest Car', and hopefully we'll be able to crown a winner.

What is the Outright Greatest Car?