Speedometer reads in KPH

[Wedgetail]

The speedometer on my 1940 Deluxe reads fast. When I’m going 45 mph, it reads around 70. In fact, if you assume it is reading kilometers per hour, it’s dead-on. This car spent it’s first 80 years in Connecticut, which to my knowledge, has never used the metric system on their roads. I don’t really mind, because it makes me feel like I’m driving fast, but what’s going on here?