This is what Flock cameras are for.

A Marina man who police say struck a 14-year-old boy with his car in Pacific Grove and fled the scene last weekend was arrested the next day, thanks to technology and several vigilant citizens.
Pacific Grove Police said that on Jan. 25 the teenager, a student at P.G. Middle School, was running southbound across Lighthouse Avenue at Alder Street when 36-year-old Toyota Prius driver Icaro Fernandes Araujo struck him and left the scene.“The day after the accident, the suspect’s vehicle was seen driving through the City of Pacific Grove,” P.G. Police said. A citizen “got the suspect vehicle’s license plate number and provided it to the police department.”
Investigators checked the city’s Flock camera system, which captures images of license plates of vehicles entering and leaving the city, and confirmed that a car with the same plate had been in P.G. around the time of the hit-and-run.
P.G. Hit And Run Suspect Caught
