What is the sexiest car ever made?

It's a fun question with no correct answer. Though oddly enough, science has accurately determined that the least sexy car is a PT Cruiser. That's a 100 percent true fact.

Maybe.

But while opinions will always vary on which of history's cars are the sexiest, most collectors and critics can agree that some cars are more attractive than others.

Jay Leno, host of CNBC's "Jay Leno's Garage," explains why some vehicles have a certain je ne sais quoi and others don't: "The sexiest cars are the ones that have both the male and the female accent to them."

He cites the Jaguar XK-E as a classic example, noting that Henry Manney from Road & Track magazine even once called it "the greatest crumpet-catcher known to man."

(Note: Across the pond, "crumpet" refers to either a griddle-cooked muffin or a sexually attractive woman. Using context as our guide, we can assume Manney was referring to the latter.)