[sssbc]

So each year ~5M new cars hit the streets, at an extra $140 each, so the cost is ~$700M/yr.

There are 210 deaths/yr by backing over, assume these prevent all 210 (they won't, certainly not until most of the old cars are off the road), this means each life is worth $3.3M, minimum.

Cool.

But is there a way to invest $700M/yr that will save more than 210 lives/year?