The forms to have in a vehicle at all times are the drivers license, vehicle registration and proof of insurance. The driver's license not only gives a person the right to drive but is an important form of identification.
The driver's license should not only be in the vehicle, but should be carried on the owner's person, preferably in his wallet.
The vehicle registration is given to the owner when the vehicle is registered at the local Department of Motor Vehicles, and the driver must have insurance before the vehicle can be legally operated. These two forms of paperwork should always stay in a secure spot in the vehicle.