I doubt it's that simple as (like with airbags, folding hardtops etc) technology filters down from top of the range cars etc. Obviously things/alloys get trick(i)er with time but i know mercedes were using HSLA steels for key areas back with the W124 series if not earlier, but AFAIK the
uhss steels have only been appearing over the last 10 years- Porsche started using
boron steels (bottom of page) around 2002, Volvo 1999. Not like they're making the whole car out of the stuff though
Some info and lots of links in
this thread. If all else fails you'd soon find out when you start cutting (or trying to!)