Used cars are displayed on a sales lot on June 9, 2011 in San Rafael, Calif.
Used cars are displayed on a sales lot on June 9, 2011 in San Rafael, Calif. - 

In the world of new cars, GM took over the top spot in the world today.

But more and more people aren't going that route.

The average age of a car is actually at an all-time high, and the sale of used models is going strong.

So strong, in fact, that the high demand for gently used vehicles is really putting a strain on the people that sell them -- so much so that they are now "mining" for used cars.

In today's Mid-day Extra we look at how you "mine" for vehicles.

For more, we went to Bill Visnic, senior analyst with Edmunds.com.

According to him, the year ahead could mean strong new AND used car sales.

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Follow Jeremy Hobson at @jeremyhobson