I bought my first 40 in 1982. Both my kids came home from being born in the hospital in it, and it was our only family car for 15 years. Their car seats were strapped to the factory side-facing jump seats in the back until they were old enough to not need car seats any more.
I rolled that cruiser at 45 MPH in 1989, and thank goodness no one was hurt, the car seats and jump seats were fine. The cruiser was fixed and both kids learned to drive on an FJ40.
I know that all the safety gurus say this and that about how to strap in kid carriers, and I even had a forward facing rear seat for a number of years. But there is no denying the physics of how sturdy cruisers are built and how crumply modern sedans are. I'll take my (and my kid's) chances in a cruiser over pretty much anything else.