I still don't see how a 3 point is safer or how the retractable aspect matters at all. The retractable aspect is nice for movement while buckled in, but the moment force is exerted on the belts they lock (they don't do a slow gradual lock to lessen the stress against the body).
The 3 point I always saw as safer ONLY because it gave no option of lap belt vs. lap & shoulder. Basically it was all or nothing and required one less step for the user to do. I just can't see any other way it's safer.
Of course this is all considering the belts are in equal shape. And I guess newer cars may have improved woven patterns?
I have full intentions of using my car as a daily driver...