what you see when you look at the speedometer is the average distance you have traveled. notice the speedometer says mph Miles Per Hour how many miles you have traveled per hour.
Speed - but NOT velocity.
Your speedometer is broken.
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.
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.
It shows the speed and the distance the car travels.
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.
Because the car is not moving
Look at the speedometer.
In a train of 100 cars, whether or not the last car starts moving when the engine starts moving depends on whether or not there is slack between the cars.
Racing cars such as those in Formula 1 racing do not have speedometers
A (non digital) speedometer is a damped needle moved by a rotating magnet driven by cable from either the gearbox or one of the wheels.
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.