Fixeta is valid for all vehicles sold in United States from 2002. In Spain since 2005, and in most of the european countries since 2007. And even if your car is older you may check it because probably you have at least one seat with ISOFIX / LATCH anchorages.
Fixeta uses the ISOFIX / LATCH anchorages system, an International Standard, originally built for children seats. It provides a fast, easy and safe plugin and plugout for children seats (or fixeta suitcase)