The deals on new cars are undeniably amazing because of vast oversupply. But has Clark's recent overwhelming enthusiasm about buying new left you exasperated with the consumer champ?

It's as if "Used Car Guy" is betraying his roots. Whatever happened to his advice to ride your old car until the wheels fall off?

Well, here's a rebuttal that may please you. AAA reports that the true annual expense of owning and operating a car is $7,800, according to an article in The Wall Street Journal. This figure takes into account insurance, gas, maintenance, interest, depreciation and other factors.

The real cost of buying a new vehicle comes when you take a huge hit on depreciation during the first few years of ownership. But that loss in value decreases each year until you're eventually practically driving for free.

So the math remains lousy if you buy a car and keep it for a short cycle. And it's even worse if you lease a car.