I want to clarify that in 2000 Volvo began selling cars in US with dual stage airbags (S80 at least) and by 2002 (in some cases MY03 cars though) all US Volvos

I want to clarify that in 2000 Volvo began selling cars in US with dual stage airbags (S80 at least) and by 2002 (in some cases MY03 cars though) all US Volvos had them for both front airbags. Dual stage does not mean having the seat weight sensor. That is what is part of what is termed advanced airbag system in US market. The Volvo system would inflate the airbag less or more rapidly based on force of collision and whether the seat was belted or not. You could have the dealer install a passenger side airbag lock-out though.