" It was 1983 before it became mandatory to wear them in the front, "
In the UK? IIRC about 1/3 of all US drivers demand to assert their constitutional rights by not wearing them.
Which is why US airbags are loaded with more gas generating powder.
The explosive force of which has killed at least 1 7 YO child who was in the front passenger seat of a car that tripped by mistake. It's not good if you're a small women either.
So I guess self drive cars are quite attractive in America.
Or will this drive Ford into another bankruptcy and necessitate yet another USG bail out?