What Makes a Car "Cool"?

As the November 17 deadline for our annual XM Coolest Car Challenge quickly approaches, we wanted to hear your opinion on what exactly makes a car cool. We know, we know, it's a shameless plug -- but the topic at hand does have an truly intriguing aspect to it. So, without further ado, what makes a "cool" car? Is it its design, sound, price, heritage or a blend of other attributes? What are the top three "coolest cars" currently in production? Also, don't forget to compile your list of coolest cars at the contest's official site for your chance to win $10,000.