A new generation of train lovers (?)

Santa brought my grandson a NASCAR set for Christmas (after all, he was 6 months old). He (and his dad) absolutely loved it, and he is already working the throttle. Might have even hooked his big sister. My daughter says it must skip a generation, since neither of my kids showed much interest in trains. His dad had also picked up a used set for Christmas, so they had 2 sets running together.