The term "car driver" is not possessive. A "car driver" is compound noun for a person who is capable of driving a car.
Example: We should hire a car driver to show us the sights.
The possessive form is "car's driver", the driver of the car.
Example: The car's driver did not stop at the stop sign.
The possessive form of the singular noun driver is driver's.Example: A driver's license is required to drive a car.
The possessive form for the noun driver is driver's.
driver's
The possessive form of the singular noun driver is driver's.Example: There was a small dent in the driver's door.
A stock car.
The possessive form for the singular noun driver is driver's.Example: I passed the test and got my driver's license today.
The singular possessive form for the noun driver is driver's.The plural form is drivers.The plural possessive form is drivers'.Examples:I waved to get the driver's attention.We bought a new coffee maker for the drivers' lounge.
The singular possessive for car is car's.example: The car's tyre was flat.
The possessive form of the singular noun driver is driver's.example: She always leave the driver's seat in the far forward position.
i think Lady Gaga does not have a car she has a driver drive her around
The possessive form of 'the car of your mom' is your mom's car.
The possessive noun is "son's". My son's car = the car of my son.