traveling at 30+ mph (50+ kph for you non-yanks)
A: Most non-yanks know the conversion, although I also tend to include both units to help the readers.
B: The correct would have been km/h, not kph. Just saying.
A: Well, that's just because y'all are more globally intelligent. I continue to remain baffled at the American (or is it "United Statesian" since everyone across 2 continents are "American") inability to grasp killermeters.
B: Well, yeah, if you want to be SI compliant, but kph was first (per the source of all truth, wiki):
1889: "k. p. h."
1914 "km. hr."
1916: "km. per hour"
I can settle one part for you quite easily.
You can refer to those of us residing the the United States of America, as Americans.<P>
We've been going by that moniker for a bit over 200yrs and we're quite happy with it.
Yes, we're a part of North America, but we're the only country that has America in its name. Mexico has Mexicans, Canada has Canadians....etc.
I dunno where this recent trend to try to rename us has come from, but please stop it. We are not Usian's, we are Americans, and prefer that for the most part.
As for the metric system, well, honestly, at this point, it would cause more turmoil and cost more money that would likely be beneficial to us.
Most Americans never leave the country and have very little interaction with the rest of the world where measurement would be required. So, at the very least the cost/benefits can't really be seen to favor the change. And just so ingrained...I know how fast I'm going at 80mph, I have no idea what I'd be doing (without sitting down with a calculator or Googling it) at 30kmph. I have no concept on how to dress if the weather said it was 20C or 40C....but I know 32F and 98F without thinking.
It doesn't seem to be impeding that much on trade (although it did lead to one space snafu) so, why change? And it isn't like the US is well known to have much an inclination to "follow the rest of the world because they do x this way". We not only like doing things our own way, we relish the independent thought and action mentality.
But I'm just rambling at this point...