1975 So Cal "installed Smog Thing"

Drove around Vallejo late 60's. Cali started that smog thing in the urban areas starting in 70. I had a SC/Rambler and prior to titled I had to get one of these green devices installed. Once I was registered off it came and the timing re-set. They also ran random smog checks around town. They would focus on the streets where we cruised Friday and Saturday nights. Word traveled fast and all we would do is skirt around the checkpoints. The 70's was the start of the draconian government takeover of the state.