The final qualifying races for the Daytona 500 take place Thursday night and 72-year-old Morgan Shepherd could become the oldest driver ever to make it into NASCAR s premier competition.

Shepherd told CBS News' Jeff Glor, he's not racing against time; he's just turning it back.

Who would of ever thought I'd been here racing 47 years? I mean, I thought when I was younger 40-years-old was old. Now, I don't know what is old, he said. I run like I'm 30.

Shepherd is already the owner of 235 top 10 professional finishes and19 wins. Shepherd is trying to do something that's never been done before - qualify for America s most famous stock race as a septuagenarian.

He told Glor it's just another day at the office for him.

It's just like playing chess or checkers. You got to make the right move ... at 200 miles an hour, he said.

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