The local Tax Assessor/Collector is getting tough on people who use paper plates illegally. The El Manana story even points to a motorist from Florida who drove into town using a piece of cardboard, with his writing on it, as plates. This issue is nothing new; it's been covered before.
Here's a way to spot fake paper license plates: If the car has paper plates and a "Tony Sanchez for Governor" sticker, chances are plates are fake.
If the car or truck has paper plates and fresh bondo on the side, chances are the plates are illegal.