We had a bench seat in the front. So Mum, Dad, and 11yo in the front. 8yo, 6yo, and 2yo in car seat in the back.
At least we had air conditioning.
In about 1988 the six of us did a road trip from Bundaberg to Thredbo and return in the same vehicle. Mum, Dad, and 17yo in the front, 14yo, 12yo, and 8yo in the back! 😱
That was probably our last family road trip.