MPH to km/h Car Windshield Cling

Prix régulier $4.00

Do you own a JDM (Japanese Domestic Market) vehicle that has a speedometer only in km/h and live in a country like the United States that speed limits are in MPH?  This is a very basic and inexpensive solution to that problem.  I personally didn't want to buy a GPS or separate speedometer specifically for my car.   

Made in the USA!!!