i like to watch Adam 12 partly for the cool cars . one car i notice in many driving scenes. is the gray 1960 chevy convertible wit black top. i'm guessing the car belongs to one of the film crew. as it is parked along the road in a few scenes . i know the actors are not driving in the car . this is just something i have noticed and wondered about. lots of other cool cars in the show also

Yep, I've seen the car you're referencing parallel parked on the street in a few scenes. I enjoy seeing all the great old 60s and 70s cars in this show.