Having probable cause to stop, is easy.
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Actually, these days it's a cinch.
I remember reading a story once about a woman who noticed a policecar behind her (no lights, just 'behind' her).. She carefully drove toward home for some miles before all of a sudden the lights went on. She pulled over, waited for the cop and asked what did she do wrong. "Nothing," he said, " I pulled you over because you were driving so perfectly that I was sure you didn't have a license."
Yep, probable cause... Geez...
