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How do you determine a car's speed? Well one way is to measure the flow of gas going into the engine, do some math with that and the size of the engine, further calculate it with the dimensions of the crank shaft, input the current gearing ratio...
I think I’d probably time how long it took to go between two points a known distance apart, or possibly bounce a radio wave off the car and measure the difference in frequency of the outgoing and incoming waves.
This thread is about cars right?
I would just look at the car's speedometer
Yeah that's what the cops do. Tougher when you're in the car.
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