alt Hacker NewsThe innovations that mattered were seat belts and airbags. After that you have to correct for all the electronic gadgets that also actively distract or make drivers over-confident. Real numbers are not available, but governments keep mandating all kinds of questionable safety features that increase the price of vehicles (and insurance) and reduces competition in the market.
I'll grant you some of the more recent driver-attention monitoring features, but you'd be hard put to make the case that the blind-spot warning during lane changes, the cross-traffic warning when reversing out of a parking space, and the emergency brake when the car in front of you brakes hard, don't all save lives (and, perhaps more relevantly to the industrial players, collision insurance claims)