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Speedometer can determine a car's normal and maximum speed.
Older cars have a cable, which is turned by a gear at the rear of the transmission, and this operates a mechanical speedometer. Modern cars have an electronic sensor in the gearbox which is linked by wire to an electronic speedometer.
The speed of the car.
The car's speedometer indicates the car's instantaneous speed. This is a big part of the reason that it's not called the car's accelerometer, thermometer, or voltmeter.
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The speed of the car. The speed-o-meter only shows a magnitude ( or a number ) and to tell the velocity of a car it would have to give that speed some direction. Since the speedometer assigns no direction to the car, the number assigned as the speed of the car cannot be the velocity of the car.
Racing cars such as those in Formula 1 racing do not have speedometers
The speed of most cars today is limited by the computer, no matter what the speedometer says. My car's speedometer lists 140, but it actuality 120 is the top speed as the limiter kicks in and controls the speed by way of a fuel shut off.
Speed - but NOT velocity.
A cars speedometer measures speed. A speedometer is a gauge that displays the speed of a vehicle so the driver will know how fast the vehicle is moving.
I would venture to say that all new cars have digital Speedometers. The cars computer knows all. It is where everything that the car does is processed and recorded. The days of the old speedometer cable and odometer cable are long gone.
Accurate or precise are one and the same to which the automotive speedometer would never be.