Collisions with trees and with other vehicles? Or collisions with pedestrians? Maybe we're fine with five 9s of reliability with inanimate objects and with othe

Collisions with trees and with other vehicles? Or collisions with pedestrians? Maybe we're fine with five 9s of reliability with inanimate objects and with other 2-ton metal crash protection cages but prefer seven 9s with fragile unprotected human bodies (which are far more likely to end up as fatalities than just crashes).