April 30, 2006; Columbus, WI. - The season opener at Columbus 151 Speedway was cancelled due to rain.  The 2006 season will get underway beginning Friday May 5 with Moore's Towing and Service night.  Fans can recieve half price admission rates with a donation to the Beaver Dam Humane Society wish list.  Time trials begin at 6:30 with racing at 8 pm.