It is wrong to assume
that any particular GM Line is safer than another merely because it has a particular cachet or higher price.
In 2005, the introduction of the boron-steel frame coupled with several other advanced safety systems which lead to enormously safer GM cars was first rolled out on the Chevy Malibu, Cadillac followed only later in that model year. GM didn't plan it that way, but that's what happened.
I remember going through all the safety reports on new cars in 2005, as I had to buy one for my parents. It was either the VW or the Chevy Malibu, everything else came in behind on safety.
Ironically, all these pregnant cows of super-heavy trucks which have been sold in the US over the last years don't even have to be roll-over safe. And to listen to the screams of the industry because they now must (finally) meet the standards of the early 1970's...
Malibus and S-10s may not be sexy, but I do note that mile for mile our Cadillacs have always been both less reliable and far more expensive to repair. I'll stick with my Malibus and S-10 any day.
And, yes, it does hurt to see that beautiful '59 meet its end. Gosh, I loved that styling.