This weekend’s racing calendar has some changes as well as one track ending its season.   Lovelock Speedway was supposed to end its season this Saturday but the track canceled the final two events on its calendar. And the Northern Nevada Kart Club had to cancel the “Clone Wars,” event as there were not enough entries to cover expenses. On Friday, starting at 6 p.m. Rattlesnake Raceway in Fallon will host its final point race of the season. The car classes are featured and there will be a demolition derby that will probably close the show. Closer to home Fernley