Spectators, start your engines.Saturday from 2 to 4 p.m. is the public’s chance to drive around the Hawkeye Downs racetrack in southwest Cedar Rapids and see this year’s St. Patrick’s Day parade entries. But don’t expect to be revving or racing. Vehicles will be crawling along behind St. Patrick (aka Steve Bryant of Cedar Rapids), SaPaDaPaSo signs and convertibles carrying the group’s 2020-21 Colleen, Rebecca Hingst of Center Point; SaPaDaPaSo President Lisa Dalizel of Cedar Rapids and Cedar Rapids Mayor Brad Hart.The all-volunteer Saint Patrick’s Day Parade Society (SaPaDaPaSo) is carrying on a tradition in an untraditional way.