Q: What would be more accurate, my vehicles speedometer or a GPS I have on my dashboard? A: They both can be accurate and inaccurate. Speedometer: Aftermarket modifications, such as different tire and ...

There was a time, back before cyclometers and smartphone cycling apps, when some bikes came with novelty mechanical speedometers. While no one is suggesting bringing those back, Finnish startup Omata ...

Q:I operate two vehicles with two different aftermarket GPS systems, each gives me conflicting speed readings in relation to the vehicles' speedometers. Which is more reliable, the factory installed ...