ANCAP is the organisation that tests cars for safety in the event of a car crash in Australia and I think New Zealand. I don't know what the letters stand for, nor who funds the body who does the testing. It gives cars a star rating system and only cars that reach five stars are allowed to be sold in Australia. But if you are looking at buying a car a few years old, and you note it has a five star rating, that is just not the same as a five star rating for a brand new car. Safety standards are improving constantly.
You can see the headline to the video, 1998 Toyota Corolla hitting a 2015 Toyota Corolla. The result might be more dramatically different if a 2018 model was used fitted with side airbags. At work I often drive a 2016 Toyota Corolla. While on the ANCAP website, you see real people behind the steering wheels before switching over to the crash test dummies, still the video with only the crash test dummies is frightening for those of us who drive an older car, like our second car. It goes on a bit, so if you are in a hurry, skip to 30 seconds and then on to 1:40. Actually, it worth watching the first part, as you see the multiple airbags inflate.