sebastian wheldon is the son of two-time indy 500 champ dan wheldon who died in a fiery crash in las vegas almost three years ago. >> it means a lot to see sebastian out here. i mean, you know, i can just see dan's smile. i know he's super proud of him. >> reporter: sebastian is leading the field in a pace lap ahead of a charity race named for his father. a fundraiser for alzheimer's research. >> i think one of the great things that, you know, dan passed down to him was that love of racing and just that drive, i guess you would say. >> reporter: but for a little boy to learn more about his dad. >> daddy and me. >> reporter: and the stars of racing, once dan wheldon's toughest opponents, are here to help him. >> you know, i think he's living the legacy of his dad. >> reporter: but the lure of the track is something that can't be taught. and for sebastian wheldon, it doesn't have to be. >> he loves it. loves it. he just wants to be like his dad. and he is. >> reporter: on the fast track as the son of a legend gets to climb behind the wheel and save a course just like dan. >> reporter: j