Using that same logic, if Britain used metric speeds, instead of reporting a car's 0 to 60 mph time, the new standard could be the car's 0 to 100 km/h time. Doesn't 100 sound faster? Or is 60 "just right", because it's what you're used to?
In reality people tend to cruise along at 90 (mph) on UK motorways.
That's unless you're on the M25, because in the UK we know the M25 as the worlds biggest carpark!
Also people tend to test their acceleration about 100yds after a speedlimit-enforcement camera ;-)
Back to the subject though - we tend to see 0-60 as a gauge of 'nippyness'. I believe that in the US it is more standard to use the stading quarter mile to gauge this. Correct me if I'm wrong.
