Gps speedometer

Got one, works good, 28 bucks on Ebay


Hi - doesn’t seem bad. But why would I use it? Unless I’m planning to modify my car in a way that upset the speedometer (such as the wheel size), why would I need a second reading?

For the guys who hot rod their cars this is a cheap way to get actual MPH without any involved changes.

Of course, that makes sense! Thanks for answering :slight_smile: