"Job security guaranteed"... That's so ludicrous, I don't know where to begin. Forget driverless cars for a moment and think about the fact that a few bad ratings can remove your ability to earn income from this source forever.

Put another way, if a few someones you give a ride to rate you low, you lose your ability to earn. That's hardly "guaranteed"... I would certainly contrast it with the current model of "at-risk" employment we have now, but the certainty of your word choice feels facetious at best.