Originally Posted by buckminsterfullerene

Miami, about 155 miles south of sebastian from what I see on google maps.

I think this one took place on the streets of miami, I have also seen them stopping cars at random on my way to school about once or twice per week (fortunately I took the school bus, but once my dad had to drop me and it was a bit scary, we were lucky they were apparently too busy and let several cars go without completing the check.)