Neil Young admits it. He's a train nerd - with a heart of gold.

"I'm proud to be a train nerd," he says. "I think it's a good thing to be. Trains are a lot of fun."Now the singer is teaching his son Ben to be a train nerd, too, even though Ben suffers from cerebral palsy, a debilitating disease that robs him of much of his motor skills. Young created an elaborate railroad model equipped with a special device to accommodate Ben's needs.

"Ben has taught me that you never give up," Young says in an interview with Nickelodeon scheduled to air Sunday. "If there's something I come up against that's hard to deal with, I can handle it and it's because of him."

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