In a flurry of face paint, furry costumes and fixies, around 50 people raced through downtown Davis on bikes Saturday afternoon, a mad dash to the Death Star — a.k.a. the Social Sciences Building at UC Davis — to find a map that would lead them through the rest of the ride: the Day of the Dead-ly Davis Derby. The Halloween ride was the fifth installment of the Davis Deadly Derby, a DIY bike race that changes form with each occurrence. Usually it involves a scavenger hunt, once it involved music performances at each checkpoint, and always it ends in celebration and beer. The makeshift race was organized by members of the Davis Bike Collective, with donations benefitting their new location