Speedometers are devices in a car that show how fast the car is going.
Speedometers are important for driving safely and following the rules.
Examples:
The speedometer in the car tells us how fast we are going.
The speedometer goes up to 120 miles per hour.
I looked at the speedometer to see if I was driving too fast.
The speedometer must be broken because it says we're going 200 miles per hour!
The speedometer is like a magic eye that knows how fast we are going.
The speedometer is my favorite part of the car because it tells us how fast we are going.