Drinking and driving?

"Been drinking tonight sir?" The policeman asked.
"I had one earlier, but that was all," I replied.
"I think you've had a few more than that sir. Would you step out of the van please."
"Why?" I asked.
"Because"
"I had one earlier, but that was all," I replied.
"I think you've had a few more than that sir. Would you step out of the van please."
"Why?" I asked.
"Because
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