"People are going to get older and young guys are going to come in and race and get more competitive"

This quote by Dale Earnhardt talks to the ever-changing nature of the racing world. He is acknowledging that as time passes, people will age and brand-new, younger racers will come in and end up being more competitive. This is a natural part of the sport, and Earnhardt is acknowledging that the competition will only end up being more strong as time goes on. He is also likely revealing his affection for the more youthful racers, as they bring a new level of energy and enthusiasm to the sport. Earnhardt is likely also expressing his respect for the older racers, as they have paved the way for the younger racers to come in and make their mark. He is acknowledging that the sport is constantly evolving which the competitors will only end up being more extreme as time passes.