Sparks Police are now looking for a specific vehicle in their investigation into a fatal hit & run. The crash December 4th, at G Street and El Rancho Drive resulted in the death of 57 year old Christy Valdez, and the injury of a man who was also hit. They were in a crosswalk. Police are looking for a silver 4-door Chevy Impala, with Nevada plates 565-AXT.