At the same time, those extra safety and efficiency capabilities might be offset by the fact that they are much more vehicles on the road and gas prices how muc

At the same time, those extra safety and efficiency capabilities might be offset by the fact that they are much more vehicles on the road and gas prices how much higher than they were in the 1970s. Granted, gas prices in the 1970s might be a bad example. But it’s just very hard to measure added utility in the face of increased requirements of the society around you.