If I travel at a constant speed of 100 km/h (~62mph), it takes me one hour to travel 100km (~62 miles). This is not even math. Do you want me to a) convert be

If I travel at a constant speed of 100 km/h (~62mph), it takes me one hour to travel 100km (~62 miles). This is not even math. Do you want me to a) convert between km/h and km/"simple h" or b) replace all tachometers, speed-limit signs and laws? or c) define "simple km" to fit?