They used to have smog checks back in Florida. There weren't independant stands that performed the test. They were all city employees. When they started the program, it was agreed that, after ten years, if the program did not improve air quality the program would be disbanded.
After ten years, the study showed zero improvement in air quality and they shut down the program. Them following through with the program closure really surprised me. The city lost a huge chunk of budget when it closed.
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