Hey so weird question... anyone have any speedometers/app/program/tool that can track both MPH and KMH with certain accuracy?
Reason I'm asking is because I'm going on a road trip and just realized how the MPH lines are not scaled properly. ie the 60mph is aprox 90kmh (it should be a tad under the 100), plus my having slightly different sized tires, I just don't want to be caught with my pants around my ankles when I'm in the states.
