Looking at the safety ratings of various cars, I am amazed that there are so many unsafe cars still on sale, and that many buyers are clearly not considering safety as part of their decision.
For an infamous example consider the Chrysler Voyager, which is aimed at families, who must surely be the most safety couscous group of buyers, and yet it is so unsafe that a 40mph bump (that could happened at any time due to some other nuttier) will probably kill the driver. Compare that with a competing safe MPV where everyone would walk away with only minor injuries.
For myself, when I chose a new car back in September, I looked at the Euro-NCAP site, and discounted a couple of cars I was considering because of their low scores. The car I eventually chose scored top marks in all areas.
Perhaps there should be further measures against less safe cars, by for example forcing dealers to tell potential customers that the car they are looking at is less safe in a crash.