Take pictures of all of your company vehicles and their VINs. File these away in case you need to file insurance claims or police reports or compare conditions of your vehicles between assigned drivers. Assign the drivers to shoot pictures of those vehicle serial numbers normally found on the top of the dashboard.
Retain photographs of the vehicles along with extra sets of car keys in the event someone loses the only key to one of your vehicles at 2 o’clock in the morning somewhere 500 miles from your office.