I find the clip starting around 9 seconds interesting. Looks like a driver with adult and child passenger in the back. The child is not in a car seat and doesn't seem to be belted. The adult in the back doesn't seem to be tightly belted, but I can't tell for sure. Maybe seat belts really do that.

But the kid slides between the front seats and plants his face in the dash.

Good advertisement for child car seats........

Ken300D

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1982 300D at 351K miles
1984 300SD at 217K miles
1987 300D at 370K miles