At 5'9" and 171 lb, the old 1970s dummy has a BMI of 25.2 and is already "overweight" (probably because of the heavy steel they have to build it around).

My main takeaway from Dan's article is that we have a lot of blind spots in our view of car crash safety, mostly for lack of samples, and also because the American consumer just doesn't care enough about safety during the buying process to demand better information.