I wonder if "3" isn't an unspoken reliance on self-driving cars for true profitability. If you can be the "Amazon" of delivery the day courier costs drop from

I wonder if "3" isn't an unspoken reliance on self-driving cars for true profitability. If you can be the "Amazon" of delivery the day courier costs drop from $20/hour to $.56/mi, there's an awful lot of up-side. Similarly with Uber.