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Could be an American-Canadian lingo thing.. i.e. "labor - labour", "check-cheque" etc.
Actually I'm on vacation in Europe and drove the German Autobahn today, from Frankfurt to 350 km north. Now that's Wicked Fast, 200 + km/hr ( 125-130 miles / hr ) makes the second lane in look like its standing still. One has to check the rear view mirror constantly when in the fast lane, they come up so fast.
I wonder how the Model S would stand-up.