Madison Wisconsin - riding my bike 26 miles or about 2 hours each day to work and back, I count Minis to entertain myself. On an average day I spot about 18-20 Minis in those 2 hours, but my record is 36. Driving from WI to CA and back last summer for 4000 miles, we saw less than 20 Minis on the entire trip.
On our epic three week (so far) road trip we spent three days in SF. Never have I seen so many MINIs in one place so obviously unaware of each other.
There was a discussion about this on that other site. My suggestion of "a cute of MINIs" was not very popular for some reason. The most popular was "a burble of MINIs"