Cinco de Mayo is coming to downtown Greeley next weekend. The annual celebration, put on this year by the Downtown Development Authority, will run from noon to 5 p.m. Sunday, May 3 on the 9th Street Plaza and part of the 800 block of 9th Avenue, reports the Greeley Tribune. The car show will be in effect from the get-go on 9th Avenue, giving all attendees a chance to check out the hot rods, muscle cars and other classics on display. Awards will be announced at 4 p.m. To register for the car show, go to tinyurl.com/CincodeMayoCarShow…