When I was a deputy in Ohio I was running with lights & siren heading to an armed robbery in progress just after dark. I was cutting through a very rural area from one small village to another where the local grocery was being held up by two armed men. I was doing about 60 down a country road and crossed an unguarded RR track. As I crossed the track I thought I heard an unusually loud horn and looked in the rear view mirror to see train cars full of new Chevy's coming from the GM plant.
