One huge difference is that the USA still uses the English measuring and weight standards while Europe is a metric standard.
In the UK we have a mixed imperial and metric system going on. Roads distances are stated in miles, and speed limits are all in MPH, not KPH. Some bridges still have their height in feet and inches.
Fuel went over to Litres 20 years ago - I still remember gallons. A UK gallons is bigger btw. 4.5L.
I still think of my weight in imperial, most people do I suspect, even the young. But we use Stones (14 lbs) to express it. So I'd be 14 st, not 182lbs.
PS, while I think of it - breast size is measured in inches here. And I know that as Mrs Hiram wears 38E or 40F. I just checked but looking in her wardrobe while she is at work!
But metric is better.
The sheer size and distance of everything in the USA can be unnerving to somebody from Belgium for example.
That was my experience as well - the US is huge. I once drove across New Mexico in a day, a distance I'd never be able to do here.
I've been to the Grand Canyon, it is one of those places that really does give you a sense of scale. Actually I drove from The Grand Canyon to Vegas. This is before the new bridge was built over the Hoover Dam.
PS, while I think of it - breast size is measured in inches here. And I know that as Mrs Hiram wears 38E or 40F. I just checked by looking in her wardrobe while she is at work!