Working as a nurse I use metric measurements. Although when taking a persons temperature some prefer Fahrenheit. Same with a persons weight , some prefer Imperial. We are still mixing the systems. In the public sphere I see no sign of change. Every food label has both ounces and milliliters but no one pays any attention. I guess it really does not matter since when we are driving we are not conducting research. We are not a nation of scientists that is for sure.
God thinks it's fun to confuse primates. Larsen's God!