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

Driving with a broken speedometer in your muscle car has sadly fallen out of fashion. As a tech in the '90s, I'd see vehicles with carefully crafted cheat sheets taped to the dashboard calculating rpm ...

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 ...

Last weekend, I was in LA for a family event (mazel tov, Aidan!), which meant I’d need to rent a car. It used to be that renting a car came with loads of uncertainty: What kind of car would the rental ...

I complained that there weren’t enough buttons in cars anymore, but this isn’t exactly what I meant. A YouTube tinkerer named John Sutley showed us how he got the original 1989 Game Boy in his car ...