SPARKS (Nov.17) – Any shop in this area that services the go-kart community will face challenges, especially in the winter. It’s because they operate in a niche market connected to a seasonal sport.   Right now Nevada Kart Sport is the only shop of this type in the area. And despite the season the owner, Rodney Rivera is committed to the survival of his business. The shop is a dream come true for him. “In 2011 I bought all Motor Machine Supply’s inventory, we moved in and started paying rent there,” he said. “It took us a while to get