Safe-T-cell? If I remember correctly, that is a term Toyota uses for the Avalon.
All modern cars have a strengthened passenger compartment with front and rear crumple zones - including Falcon and Commodore. The difference is that Volvo, Mercedes, etc are able to dedicate more resources towards getting their safety systems optimal - plus of course they have more than 2 or 4 airbags.
Jack Travis, E-Series Acting President
1989 Ford Fairmont Ghia turbo/GL replica (underway)
1994 Eunos 800M
1990 Ford Laser S