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Comic strip of a ghost and a person with the American flag pasted on the head. The ghost repeats "Boo!" in the first three panels without getting any reaction, but when it in the fourth panel says "kg, cm, km, °C" the American gets scared and screams "AHHHH!!!".
Edit: fixed alt text
You know what pissed me off earlier this year? We took a trip from the U.S. to Canada and my Prius didn't even have the option to show kmph instead of mph on the dashboard. We looked through the manual, we looked online. My specific model doesn't allow it. Why?!
LifeProTip glue pocket calculator to steering wheel for these urgent conversions on the road
There's like five common speed limits to memorise the conversions for. It's not hard.