Owners of classic and antique cars who want to show off their prized possessions have until March 29 to preregister for the 9th annual Springtime Shine Car Show and Cruise.The April 5-6 show encompasses a cruise around 4th street, a free movie night, live music and a display of vehicles around the downtown square.So far, over 50 owners have signed up to participate in the event.“They register at the show. They can pre-register up to a week before the show,” said event co-organizer Jaime Galindo, a member of the Nuestro Car Club.“Pre-registration just makes it faster - in and out.