It is an artificial intelligence that takes a photograph and through recognized behavior patterns that you are drunk but stop driving or being prevented depends for now on you.
The function of this new technology is to warn the user that he is drunk, to guide him through a route until he reaches a better illuminated point to pick him up with a drunken rescue unit.
This also means that Uber would be analyzing users and could sell information as Facebook is doing; Abuse of private user data.
