From what I remember in 1974 when I registered my first ute in California, the reason for the commercial plates was said to be requested by the trucker's unions.People’s Republic of Kalifornistan fails to recognize that someone would own a truck for personal reasons.
Back in the early 50's when I lived in Bermuda, we had a sedan. It held 2 adults, us three little kids and the German Shephard. I think the neighbor had a small car, like an MG. One day the Shephard got traded by our Mom for two watermelons. As Dad ate watermelon, he said it was a good trade.