Here's how car speedometers calculate how fast your vehicle is going. And here's why they may not always be accurate.

Don’t you just love reading about cars bought by guys with unlimited budgets? Someday, you muse, you’ll be able to afford the best hardware for your ride, but until then it’s all about scrounging swap ...

I am building a '49 Chevy panel truck with mostly junkyard parts. What do I have to do to use a 700-R4 trans with a carbureted 350 engine? The trans is new enough that it has a lot of wires going to ...

You're blowing down the freeway in your convertible and your speedometer suddenly fails; what can you do? If you're wearing a Breva Génie 03 wristwatch, you stick it out the window and carry on, as ...

You can use speedometer apps on your Android smartphone to find out the speed of your car, bike, or other vehicle. Speedometer apps tell you the current speed, average speed, over-speed alerts, trip ...

Knowing your driving speed is extremely important for long drives, a trip to the local market, or just a short weekend getaway. Vehicles have various safety features loaded into them, but one of the ...