People keep throwing around the liability/cost issues, but the savings to our system in the healthcare and auto insurance sectors alone will more than offset any potential downside, to say nothing of the lives that will be saved. My prediction is that it will be so good, that it will eventually become a requirement in all new cars and it will fundamentally change the face of our society. Trauma bays, EMTs, auto insurance companies and the like will all have to cope with this change.