Busch and Mars hearken childhood memories at Las Vegas

In this undated image provided by Ethel M Chocolates, a delivery truck is seen outside the Ethel M Chocolates building in Henderson, Nev. NASCAR driver Kyle Busch first went to the Ethel M candy factory with his grandmother. It wasn’t a tourist stop to the young Busch, it was a candy store and his grandmother let him roam the cactus garden and rewarded him with the craft chocolates. It comes full circle Sunday at home track Las Vegas Motor Speedway. Ethel M is part of the Mars Corp., the longtime sponsor of Busch’s team. Busch will feature the brand on his car in Sunday’s race. (Ethel M Chocolates via AP)

This undated image provided by Ethel M Chocolates, shows the visitors entrance to the Ethel M Chocolates factory in Henderson, Nev. NASCAR driver Kyle Busch first went to the Ethel M candy factory with his grandmother. It wasn’t a tourist stop to the young Busch, it was a candy store and his grandmother let him roam the cactus garden and rewarded him with the craft chocolates. It comes full circle Sunday at home track Las Vegas Motor Speedway. Ethel M is part of the Mars Corp., the longtime sponsor of Busch’s team. Busch will feature the brand on his car in Sunday’s race. (Ethel M Chocolates via AP)

In this image provided by Ethel M Chocolates, NASCAR driver Kyle Busch poses in front of the famous "Welcome to Fabulous Las Vegas" sign with his Ethel M Chocolates sponsor race car in Las Vegas. Busch first went to the Ethel M candy factory with his grandmother. It wasn’t a tourist stop to the young Busch, it was a candy store and his grandmother let him roam the cactus garden and rewarded him with the craft chocolates. Ethel M is part of the Mars Corp., the longtime sponsor of Busch’s team. Busch will feature the brand on his car in Sunday’s race. (Christian Andrade-Cashman/Ethel M Chocolates via AP)

NASCAR driver Kyle Busch's car is parked outside Ethel M Chocolates in Henderson, Nev. Busch first went to the Ethel M candy factory with his grandmother. It wasn’t a tourist stop to the young Busch, it was a candy store and his grandmother let him roam the cactus garden and rewarded him with the craft chocolates. Ethel M is part of the Mars Corp., the longtime sponsor of Busch’s team. Busch will feature the brand on his car in Sunday’s race. (AP Photo/Jenna Fryer)