It's the breeze, baby

I was catching up on my My Yahoo! page today, and decided to dig a little deeper into the site's Ask Yahoo! page. Guess what I found! An almost-answer to one of life's big mysteries and an explanation into one of Oliver's greatest enjoyments.
Dear Yahoo!:
Why do dogs love to stick their heads out of car windows?
Everyone has witnessed the rapturous joy dogs experience while sticking their heads out of car windows. Amazingly, we couldn't find any scholarly research to explain the behavior. Here are three theories we came up with...
1. The sensation of a brisk wind against your face carrying with it scents and fast-moving sights is appealing to many humans. So imagine speeding against the wind with the ability to sniff up to a million times better and to perceive movement at a much quicker pace.
2. Everyone wants a better view. Dogs are no different.
3. Dogs sense what every teen instinctively knows: it's inherently cooler to travel on wheels than by foot.
Of course, most vets and animal peeps say that such an activity is bad for the dog, i.e., potentially dangerous to their eyes and ears (infections from dirt, bacteria and the like), and maybe fatal (you know, falling out and everything). In theory, Brian and I have solved both these problems by allowing the open-window fun only when someone's in the passenger seat to hold him, and by purchasing the always-popular "Doggie Goggles," to protect his eyes.
However, Oliver's such an effective whiner that we crack the window even when it's just him in the seat; and he refuses to wear the goggles at all, so he's allowed to stick his head out without them. We argue against the practice, but Ollie tells us that this is what all the popular dogs are doing, and that he'll be able to pick up better-looking bitches if he cools in the window minus the dorky shades.